INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 131 (FEBRUARY 1997)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1997 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1998
-----------------------------------------------------------------------------------
416 BU 394 142.14 1992.37 0.847 102.1 258.6 0.14 ZULEVIC
00308 N 4732 2.5327 0.689 78.0 2.0 1991.902 263.6 0.19
2459 AC 2 282.42 2138.23 0.270 72.8 252.8 1.24 POPOVIC &
03183 S 0056 1.2747 0.978 64.8 0.0 1992.95 253.1 0.24 ZIVKOV
4038 McA 19 Aa 38.41 1985.82 0.203 88.7 249.7 0.07 OLEVIC &
05271 N 1758 9.3716 0.119 101.8 114.0 1991.902 242.9 0.06 JOVANOVIC
6862 I 489 147.21 2021.86 0.378 103.4 318.5 0.26 ZULEVIC
08315 S 1934 2.4454 0.428 115.9 226.7 1993.197 315.9 0.27
-- COU 292 23.76 2005.26 0.54 60.0 18.1 0.17 COUTEAU
10269 N 1931 15.1515 0.155 130.0 214.0 1996.347 10.9 0.16
16957 AGC 14 630.15 2247.71 0.112 172.6 264.9 0.87 POPOVIC &
23440 N 2882 0.5713 1.614 60.6 241.3 1996.849 265.9 0.87 PAVLOVIC
-- SLR 14 118.80 1977.67 0.275 39.9 110.6 0.68 DOCOBO &
23506 S 5142 3.0303 0.813 154.5 197.9 1996.85 107.0 0.70 LING
-- FIN 359 22.81 1989.05 0.412 31.3 110.1 0.08 DOCOBO &
23529 S 0313 15.7826 0.079 138.8 124.6 1995.923 99.8 0.08 LING
-- FIN 359 22.55 1988.85 0.387 36.8 109.0 0.08 OLEVIC &
23529 S 0313 15.9619 0.081 134.0 127.4 1994.703 98.1 0.08 JOVANOVIC
===================================================================================
NEW DOUBLE STAR
Discovered by: D. Dinescu, E. Horch, T. Girard, W. Van Altena (Yale
University Observatory, USA), C. Lopez (Felix Aguilar Observatory,
Argentina) and O. Franz (Lowell Observatory, USA) using optical
speckle interferometry.
STAR HR Delta m Sp Coord. 2000 1990+ theta rho
YSJ 1 4143 2 +/- 1 -- 103256.9 S 470012 5.1025 99.2 0.420
===================================================================================
PAPERS PUBLISHED IN 1996
1) ANOSOVA, et al.: "Triple star systems as producers of high velocity
stars in the galaxy". Astrophys. Space Science 236, 293 (1996).
2) AL-SHUKRI, A. M.: "ICCD Speckle obserations of binary stars XII.
Measurements during 1984-1986 from the Perkins 1,8 m. telescope".
Astron. J. 111(1), 408 (1996).
3) CARQUILLAT, J. M.; GINESTET, N.: "Contribution to the study of F G
K M binaries VII. HD 147395 a M giant spectroscopic binary". Astron.
Astrophys. Suppl. Ser. 117, 445 (1996).
4) TEN BRUMMELAAR, T. A. et al: "Differential binary star photometry
using adaptative optics system at starfire optical range". Astron. J.
112(3), 1180 (1996).
5) HARTKOPF, W. I. et al: "Binary star orbits from speckle
interferometry. VIII Orbits of 37 close visual systems". Astron. J.
111(1), 370 (1996).
6) HARTKOPF, W. I. et al: "ICCD speckle observations of binary
stars. XIII Measurements during 1989-1994 form the Cerro Tololo
4 m telescope". Astron. J. 111(2), 936 (1996).
7) HEINTZ, W. D.: " Observations of double stars and new pairs.
XVII". Astrophys. J. Suppl Ser. 105, 475 (1996).
8) HEINTZ, W. D.: "A study of multiple-star systems". Astron. J.
111(1), 408 (1996).
9) HEINTZ, W. D.: "Orbits of visual binaries". Astron. J. 111(1), 412
(1996).
10) HORCH E. P. et al: "Speckle interferometry of southern double stars
I. First results of the Yale - San Juan speckle interferometry
program". Astron. J. 111(4), 1681 (1996).
11) JASINTA, D.M.D.: "Provisional orbits for three visual binaries".
Astron. Astrophys. Suppl. Ser. 118, 381 (1996)
12) KISELEV, A. A.; ROMANENKO, L. G.: "Dynamical studies of nine wide
visual binaries in the solar neighborhood". Astron. Reports 40(6),
795 (1996).
13) McALISTER, H. A. et al: "ICCD Speckle observations of binary stars.
XIV A brief survey for duplicity among white dwarf stars". Astron.
J. 112(3), 1169 (1996).
14) MASON, B. D. et al: "Binary stars orbits from speckle
interferometry IX. The nearby solar-type speckle-spectroscopic
binary Fin 347 Aa". Astron. J. 112(1), 276 (1996).
15) MASON, B. D.: "ICCD Speckle observations of binary stars. XV An
investigation of Lunar occultation systems". Astron. J. 112(5),
2260 (1996).
16) SINACHOPOULOS, D.; VAN DESSEL, E. L.: "VRI photometry of wide
double stars V. Double Stars with mainly K- and M- type primaries".
Astron. Astrophys. Suppl. Ser. 119, 483 (1996).
17) THOREL, J. C.: "Measures and discoveries of visual double stars
made with the 50 cm refractor at the NIce Observatory". Astron.
Astrophys. 115, 59 (1996).
===================================================================================
The deadline for contributions to Information Circular No. 132 is:
June 15th 1997
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 132 (JUNE 1997)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1997 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1998
-----------------------------------------------------------------------------------
805 BU 302 449.8 2040.00 0.374 62.7 178.8 0.40 POPOVIC &
00583 N 2124 0.8003 0.550 21.5 185.2 1991.896 180.2 0.40 PAVLOVIC
805 BU 302 481.19 2123.28 0.015 94.0 177.6 0.43 ZULEVIC
00583 N 2124 0.7482 0.710 52.7 182.4 1991.896 178.8 0.43
832 A 926 750.2 2640.8 0.453 55.8 331.7 0.41 POPOVIC &
01011 N 6022 0.4799 0.548 33.5 171.0 1988.661 332.3 0.41 PAVLOVIC
12033 HU 940 111.59 1939.79 0.784 31.7 198.9 0.54 DOCOBO
19055 N 3352 3.2553 0.316 129.2 18.5 1996.698 198.5 0.54 & LING
===================================================================================
The deadline for contributions to Information Circular No. 133 is:
October 15th 1997
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 133 (OCTOBER 1997)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1997 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1998
-----------------------------------------------------------------------------------
48 STT 547AB 374.24 2072.33 0.551 20.8 181.0 6.039 OLEVIC &
00057 N 4549 0.9620 6.634 64.6 273.2 1994.796 181.4 6.036 JOVANOVIC
6526 A 1580 152.39 2028.81 0.786 114.4 274.0 0.276 OLEVIC &
08017 S 0836 2.3624 0.482 80.4 268.7 1991.9052 274.7 0.279 JOVANOVIC
10374 BU 118 87.60 1936.88 0.954 39.2 244.8 0.53 DOCOBO
17103 S 1544 4.1096 1.519 94.9 274.5 1996.69 243.9 0.54 & LING
-- FIN 328 18.721 1977.01 0.841 49.2 183.8 0.249 OLEVIC &
21044 S 1951 19.2296 0.392 119.4 96.1 1992.4498 172.5 0.277 JOVANOVIC
16157 A 2099 232.63 1917.63 0.437 168.8 161.3 0.67 DOCOBO
22401 N 0112 1.5475 0.568 75.7 178.2 1997.679 161.6 0.68 & LING
===================================================================================
THE VARIABILITY OF COU 14
V.S.Tamazian, J.A.Docobo and N.D. Melikian report an integral brightness variation
of visual double star COU 14 = WDS 21501N1717 by 0.3mag. in standard V passband
registered during recent photometric observations performed at Byurakan Observatory,
(Armenia) in July-September, 1997.
Probably, the secondary component is T Tau type variable with an amplitude of more
than 3mag. More details in IBVS No.4515 are given.
These observations confirm the variability suggested by P.Couteau.
===================================================================================
REPORT
Commission 26, Division IV Double and Multiple Stars
President: H. Zinnecker
Vice-President: C. Scarfe
Organizing Committee: C. Allen
J. Armstrong
W. Hartkopf
R. Mathieu
A. Tokovinin
M. Valtonen
C. Worley (ex-officio)
New members: R. Hindsley (USA) C. Prieto (Spain)
C. Hummel (Germany) G. Torres (USA)
D. Jassur (Iran) S. Soederhjelm (Sweden)
E. Martin (Spain) J. Wang (China,PR)
R. Mathieu (USA)
Consultant: B. Mason (USA)
Necrology: I regret to inform you of the deaths of the follwing members:
P. Baize A. Shul'berg
W. Luyten P. van de Kamp
A business meeting of the Commission was held at Kyoto on Aug. 22, 1997. As
expected, attendance was small (9 members). Results of the mail ballot resulted
in the election to office of those names starred above. As is customary, the
former Vice-President, Dr. Zinnecker, succeeds to the Presidency.
There was a brief discussion of the future direction the Commission might take,
and there was general agreement that this would undoubtedly involve the
combination of the classical astrometry and spectroscopy of binary stars with
rapidly growing and much more accurate modern techniques. Also, it was
emphasized that a true understanding of the mechanisms of star formation cannot
be attained without accounting for the large number of binary and multiple stars
extant.
Two important meetings concerning binary and multiple stars occurred in 1995
(Calgary, Canada) and 1996 (Santiago de Compostela, Spain). Dr. Zinnecker
tentatively proposed a future Symposium about the year 2000 on general topics of
interest. Worley reported on the present status of the Washington Visual Double
Star Catalog and the Orbit Catalog, as well as the progress of the speckle
program and the Navy Prototype Optical Interferometer.
Charles E. Worley
President 1994-97
===================================================================================
NEW DOUBLE STAR
Par m(pg) RA sa DEC sd mua smua mud smua N ep mem
(0.001s) (0"001) (mas/yr) (mas/yr) (1950.+)
---------------------------------------------------------------------------------
1052 14.40 053255.592 2 -054348.99 1 27.0 0.7 17.3 0.4 9 -7.4 0
1058 14.40 053256.838 2 -054405.78 2 26.8 0.8 16.9 0.5 10 -3.5 0
Par: Parenago (1954) number
RA, Dec: epoch 1950, equinox 2000, positions in Hipparcos reference system.
sa, sd: accuracies on RA, Dec.
mua, mud: Proper motion, transformed to PPM system (mu-a cos d, mu-d)
smua, smud: errors on proper motions
N: number of plates used
ep: mean epoch of plates used.
mem: membership probability
In a recent study of proper motions in the Orion cluster region we discovered what
seems to be a new double star (a proper motion pair), with a separation of 25" and
minimal differences in the proper motions.
The positions are in the Hipparcos reference frame. The little information I have on
the (very similar) colours of these stars indicate early K-type dwarfs, at an
estimated distance of 120 to 200 pc.
The data given above come from K. P. Tian, F. van Leeuwen, J. L. Zhao and C. G. Su.
Astron. Astrophys. Suppl. Ser. 118, 503 (1996).
Floor van Leeuwen
Royal Greenwich Observatory
Cambridge U.K.
===================================================================================
The deadline for contributions to Information Circular No. 134 is:
February 15th 1998
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 134 (FEBRUARY 1998)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1998 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1999
-----------------------------------------------------------------------------------
48 STT 547AB 374.24 2072.33 0.551 20.8 181.0 6.039 OLEVIC &
00057+4549 0.9620 6.634 64.6 273.2 1994.796 181.4 6.036 JOVANOVIC
6549 STT 187 235.0 1937.0 0.71 219.0 346.9 0.38 MASON &
08041+3302 1.53 0.349 132.9 86.0 1994.1523 346.3 0.38 HARTKOPF
7341 A 2477 600.0 1914.5 0.546 248.3 347.6 0.43 MASON &
09245+1808 0.60 0.726 49.6 341.0 1995.28 348.5 0.44 HARTKOPF
-- FIN 47 7.54 1983.2 0.36 224.0 236.4 0.05 MASON &
11053-2718 47.74 0.142 98.0 328.0 1996.1783 218.0 0.09 HARTKOPF
8446 STF 1606 744.0 1993.24 0.693 125.2 185.5 0.31 MASON &
12108+3953 0.484 1.267 136.4 275.1 1997.39 181.3 0.31 HARTKOPF
8862 HU 644 48.91 1968.55 0.229 91.09 121.1 0.28 MASON &
13198+4747 7.360 1.507 94.45 73.55 1997.41 110.1 0.42 HARTKOPF
8987 BU 612 22.46 1929.84 0.56 37.0 73.3 0.09 MASON &
13395+1046 16.02 0.200 42.6 357.0 1997.1263 119.6 0.10 HARTKOPF
-- COU 1757 61.2 1998.7 0.49 10.1 273.6 0.07 MANTE
14260+4213 5.8824 0.247 58.2 280.3 1992.408 309.0 0.07
9617 STF 1937 41.591 1933.884 0.2759 203.3 53.5 0.87 MASON &
15232+3017 8.6557 0.871 57.6 38.5 1997.2684 58.3 0.81 HARTKOPF
-- COU 982 180.0 1990.1 0.438 78.8 78.2 0.24 MANTE
16216+3631 2.0 0.398 31.6 316.8 1993.501 82.2 0.25
-- COU 321 71.02 1997.27 0.408 138.1 307.7 0.08 DOCOBO
19180+2012 5.0690 0.165 102.8 209.9 1995.7620 302.1 0.06 & LING
16800 BU 1266 48.4 1910.0 0.43 249.0 36.7 0.17 MASON &
23304+3050 7.44 0.189 142.0 335.0 1996.8628 30.0 0.16 HARTKOPF
16886 A 1493 119.0 2014.7 0.170 44.3 331.8 0.13 DOCOBO
23382+5514 3.0252 0.155 158.0 141.3 1995.9153 328.0 0.13 & LING
===================================================================================
CHARLES EDMUND WORLEY, 1935-1997
Charles Worley, 62, Astronomer at the U.S. Naval Observatory, died
unexpectedly on Dec. 31,1997, after a short illness. He was born on May
22, 1935, in Iowa City, Iowa, and grew up in Des Moines where his father
was a doctor. He became interested in astronomy at age nine. His first
observational work as an amateur astronomer was plotting and recording
of more than 10,000 meteors for the American Meteor Society. Continuing
his love for astronomy he attended Swarthmore College where he took part
in the parallax program. He also met the other love of his life, his
wife, Jane. He obtained a B.A. in mathematics from San Jose State
College in 1959. He worked for the Lick Observatory in California
(1959-1961) as a research astronomer under a Naval Research grant to
observe double stars. Since arriving at the U.S. Naval Observatory in
1961, he was the motive force behind an extensive program of double star
observation (being, himself, a prolific observer having the second
largest number of double star measurements ever achieved by one person),
instrumental innovation, and double star cataloging. He quickly gained
recognition as one of the world's leading experts in the field of double
star astronomy.
In 1965 Charles arranged for the database of double star data, the
Index Catalogue of Visual Double Stars (IDS), to be transferred from the
Lick Observatory to the USNO. This database has become a truly
comprehensive resource under his guidance, and is formally recognized as
the international source of double star data by the International
Astronomical Union (IAU). He updated the database on a continuing basis
adding 290,400 observational records to the original 179,000 and
increasing the original 64,000 systems by an additional 17,100 through
careful literature searches and extensive communication with other
double star observers throughout the world. During the past three years
he extended the scope and utility of the database, now known as the
Washington Double Star Catalog (WDS) by adding accurate photometric
data, improved spectral types, and identification information. The
project was completed in 1996, and the revised WDS is available on the
world wide web. Most recently he oversaw the addition of 15,000
Hipparcos Catalog double stars into the WDS. Requests for information
from the WDS database arrive daily from astronomers all over the world.
In collaboration with William Finsen and later Wulff Heintz,
Charles produced two Catalogs of Orbits of Visual Binary Stars, the most
recent published in 1983. At the time of his death he was preparing
what would have been a new version.
In recent years an accurate knowledge of double and multiple star
separations, position angles, and orbital motions has become
increasingly important to astronomy. It is now realized that not only
must double stars be identified and calibrated in order to produce the
best astrometric catalogs of stellar positions, but also the varying
centers of emission at different wavelength bands must be taken into
account to meet modern high-precision astrometric needs. For Charles's
contribution to this aspect of astrometry, he received the 1994 U.S.
Naval Observatory Simon Newcomb Award for Scientific Research
Achievement.
In 1991 he was elected as vice-president of Commission 26 of the
IAU (Multiple & Double Stars) and became president of that commission at
the IAU General Assembly in 1994. He was a member of IAU Commission 5,
the American Astronomical Society, including the AAS Historical
Astronomy Division, and the Royal Astronomical Society. He was also an
active supporter of the amateur community, and published a series of
articles in Sky and Telescope and produced the double star section of
the "Observer's Handbook".
During his career Charles made over 40,000 measures of double and
multiple stars using the USNO filar micrometer on telescopes in the
northern and southern hemispheres. In 1990 he obtained a speckle
interferometer in order to improve the accuracy of double star
measurements. During the past seven years he oversaw improvements in
both instrumentation and software implementation that resulted in making
the USNO the world's second largest producer of double star observations
using a speckle interferometer. Under Charles's direction more than
9,200 observations were made with the speckle interferometer on 1,100
systems down to separations of one-fifth of an arcsecond, the
theoretical limit of the 26-inch refractor. Recently the speckle
interferometer has been used to observe Hipparcos problem stars on the
McDonald 2.1-m Otto Struve telescope. His special interest in nearby
stars led to the discovery of 39 new, cool stellar companions. These
companions which are faint and difficult to observe provide critical
census information on the solar neighborhood. From 1954 to 1997 he
published some 75 professional papers primarily on double star astronomy
and gave numerous invited presentations at meetings. He was known for
exacting standards and high quality best typified by his paper
challenging all other double star observers; ``Is This Orbit Really
Necessary?"
We are reminded of a favorite quote of Charles' from Paul Couteau's
book ``Observing Visual Double Stars":
``Do not forget that an astronomer who observes perfect
images visually is a wild beast who devours his prey.
Do not disturb him under any pretext. Let nature take
its course".
Charles will be sorely missed by his many friends and colleagues.
Geoffrey G. DOUGLASS
Thomas E. CORBIN
Brian D. MASON
U. S. Naval Observatory
===================================================================================
ANNOUNCEMENT
We are at present considering changes to the format of the Washington
Double Star Catalog. Some suggestions thus far have been minor (e.g.,
increasing the number of digits in the 2000 coordinate for greater accuracy).
However, it is possible that other changes are needed. We encourage all users
of the WDS to look at its current structure and to please make suggestions
either on the web Comment form, via email or postal mail (addresses below).
As the official double star database of the IAU ICRS working group,
we are endeavoring to make certain that all double star measurements are
included in the database. A complete list of all references included thus far
is available at . If possible, please check to see that all of your references
are included. If you find any omissions, they can be enumerated on the web
Comment form, via email or postal mail.
In this task, we are also asking double star observers in the future
to send via email the tabular data in ASCII format of double star measures
after or at the time of publication.
Brian Mason
bdm@draco.usno.navy.mil
Astrometry Dept.,
US Naval Observatory
3450 Massachusetts Ave., NW
Washington, DC 20392-5420
USA
===================================================================================
PAPERS PUBLISHED IN 1997
PROCEEDINGS OF THE INTERNATIONAL WORKSHOP VISUAL DOUBLE STARS:
FORMATION, DYNAMICS AND EVOLUTIONARY TRACKS. Docobo, J. A., Elipe, A.
and McAlister, H. A. (editors). Kluwer Academic Publishers. ASSL 223,
(1997)
1. ARISTIDI, E. et al.: "Imaging binary stars by the cross-correlation
technique", Astron. Astrophys. Suppl. Ser. 125, 139 (1997)
2. ARISTIDI, E. et al.: "ICCD speckle observations of binary stars:
Measurements during 1994-1995", Astron. Astrophys. Suppl. Ser. 126,
555 (1997)
3. BALEGA, I. I. et al: "Speckle interferometry of the sppectroscopic
binaries Gliese 150.2 and 41 Draconis", Astron. Letters 23 (2), 172
(1997).
4. DOUGLASS, G. G., HINDSLEY, R. B. & WORLEY, C. E.: "Speckle
Interferometry at U.S. Naval Observatory. I", Astrophys. J. Suppl. Ser.
111, 289 (1997).
5. FEKEL, F. C. et al.: "New and improved parameters of HD 202908 =
ADS 14839: A spectroscopic-visual triple system", Astron. J. 111 (3),
1095 (1997).
6. GIES, D. R. et al: "The O-Type binary 15 Monocerotis nears
periastron", Astrophys. J. 475, L49 (1997).
7. HARTKOPF, W. I. et al: "ICCD Speckle observations of binary stars
XVII. Measurements during 1993-1995 from the Mount Wilson 2.5-M
Telescope", Astron. J. 114 (4), 1639 (1997).
8. HEINTZ, W.D.: "Orbits of 40 visual binaries", Astrophys. J. Suppl.
Ser. 111, 335 (1997).
9. HOLMGREN, D. et al.: "Search for forced oscillations in binaries
II. Beta Scorpii. A new physical parameters and a search for line
profile variability", Astron. Astrophys. 322, 565 (1997).
10. HORCH, E. P. et al: "CCD Speckle observations of binary stars from
the southern hemisphere", Astron. J. 114 (5), 2117 (1997).
11. HSIEH-HAI, F. et al: "ICCD Speckle observations of binary stars
XVI. Measurements during 1982-1989 from Perkins 1.8-M Telescope",
Astron. J. 114 (4), 1623 (1997).
12. INNANEN, K. A. et al.: "The Kozai mechanism and the stability of
planetary orbits in binary star systems", Astron. J. 113 (5), 1915
(1997).
13. LINDEGREN, L. et al.: "Double star data in Hipparcos Catalogue",
Astron. Astrophys. 323, L53 (1997).
14. LING, J. F. & PRIETO, C.: "Micrometer measurements of visual
double stars made atn the Cote D'Azur Observatory", Astron, Nach.
318 (6), 365, (1997).
15. MARTIN, C. et al.: "Mass determination of astrometric binaries with
Hipparcos I. Theory and simulation", Astron. Astrophys. Suppl. Ser.
122, 571 (1997)
16. MASON, B. D.: "Binary star orbits from speckle interferometry. IX.
Orbits of twelve lunar occultations systems", Astron. J. 114 (2),
808 (1997).
17. MASON, B. D. et al.: "Binary star orbits from speckle
interferometry. X. Speckle-spectroscopic orbits of HR 233, 36 Tau
and 73 Leo", Astron. J. 114 (4), 1607 (1997).
18. MASON, B. D. et al.: "ICCD Speckle observations of binary stars
XVIII. An investigation of Be stars", Astron. J. 114 (5), 2112
(1997).
19. MAYER, P.: "The three-body system V505 Sagittarii", Astron.
Astrophys. 324, 988 (1997).
20. MULLER, P.: "Double star measurements made at Nice", Astron.
Astrophys. Suppl. Ser. 126, 273 (1997)
21. NAKOS, T., SINACHOPOULOS, D. & VAN DESSEL, E.: "UBV absolute CCD
photometry and differential astrometry of close visual double
stars, with G-type primaries", Astron. Astrophys. Suppl. Ser. 123,
353 (1997)
22. POPOVIC, G. M. & PAVLOVIC, R.: "CCD measurements of double and
multiple stars in Belgrade", Astron. Astrophys. Suppl. Ser. 123, 487
(1997)
23. POPOVIC, G. M. & PAVLOVIC, R.: "Micrometer measurements of double
stars (Series 50)", Bull. Astron. Belgrade 155, 97 (1997)
24. PRIETO, C.: "Micrometer measurements of southern double stars made
at the Observatory of Llano del Hato at Merida (Venezuela)",
Astron. Astrophys. Suppl. Ser. 121, 405 (1997)
25. PRIETO, C. & DOCOBO, J. A.: "Analythic solution of the two-body
problem with slowly decreasing mass", Astron. Astrophys. 318, 657
(1997).
26. RICHICHI, A. et al.: "New binary stars discovered by lunar
occultations III", Astron. Astrophys. 322, 202 (1997).
27. SCHOLZ, G. et al.: "A spectroscopic study of the binary star Gamma
Gem", Astron. Astrophys. 320, 791 (1997)
28. STRAND, K. A. & KALLARAKAL, V. V.: "Photovisual magnitude
differences for 169 double stars", Astron. J. 113 (5), 1884 (1997).
29. TOKOVININ, A. A.: "On the multiplicity of spectroscipic binary
stars", Astron. Letters 23 (6), 727 (1997).
30. TOKOVININ, A. A.: "Orbits of new spectroscopic components in 7
multiple systems", Astron. Astrophys. Suppl. Ser. 121, 71 (1997)
31. TOKOVININ, A. A.: "MSC - a catalogue of physical multiple stars",
Astron. Astrophys. Suppl. Ser. 124, 75 (1997)
32. TORRES, G., STEFANIK, R. P. & LATHAN, D. W.: "The Hyades binary
Finsen 342 (70 Tauri): A double-lined spectroscopic orbit, the
distance to the cluster, and the mass-luminosity relation",
Astrophys. J. 479, 268 (1997).
33. TORRES, G., STEFANIK, R. P. & LATHAN, D. W.: "The Hyades binaries
Theta 1 Tauri and Theta 2 Tauri: The distance to to the cluster,
and the mass-luminosity relation", Astrophys. J. 485, 167 (1997).
34. VALTONEN, M. J.: "Mass ratios in wide binary stars", Astrophys. J.
485, 785 (1997).
35. WORLEY, C. E. & DOUGLASS G. G.: "The Washington double star catalog
(WDS 1996.0)", Astron. Astrophys. Suppl. Ser. 125, 523 (1997)
===================================================================================
The deadline for contributions to Information Circular No. 135 is:
June 15th 1998
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 135 (JUNE 1998)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1998 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1999
-----------------------------------------------------------------------------------
674 A 921 146.58 2003.38 0.582 160.5 190.2 0.092 OLEVIC &
00491+5720 2.4561 0.213 56.7 90.6 1991.9043 196.8 0.081 JOVANOVIC
I 263 1100. 1939.9 0.773 223.9 262.9 0.535 MASON &
01220-6943 0.3273 2.043 71.7 317.2 1991.713 263.9 0.532 HARTKOPF
2849 A 1831 234.70 1978.57 0.258 84.0 217.4 0.142 OLEVIC &
03545+0511 1.5339 0.208 39.6 76.4 1991.9047 219.8 0.145 JOVANOVIC
2965 MCA 13 Aa 19.19 1984.23 0.140 156.3 3.6 0.040 OLEVIC &
04044+2406 18.7630 0.041 137.9 261.8 1990.7551 349.1 0.041 JOVANOVIC
3370 HU 442 248.15 1988.71 0.129 177.9 108.4 0.148 PAVLOVIC
04400+2301 1.4507 0.454 69.3 259.9 1991.902 113.0 0.153 & ZIVKOV
3608 A 1844 25.14 1949.69 0.325 105.7 146.0 0.190 MASON &
05017+2640 14.3198 0.260 20.7 96.2 1996.8662 172.7 0.171 HARTKOPF
3799 STT 517 AB 530. 1924.8 0.887 87.0 238.6 0.602 MASON &
05134+0158 0.6792 0.527 14.9 354.0 1997.1224 238.8 0.607 HARTKOPF
4265 BU 1007 114.88 1941.25 0.869 48.4 242.7 0.297 DOCOBO
05413+1632 3.1337 0.316 81.8 61.1 1991.9050 243.0 0.294 & LING
6138 A 2869 113.28 1995.62 0.819 104.5 137.5 0.067 OLEVIC &
07305+0743 3.1780 0.260 127.3 226.0 1993.2050 125.5 0.093 JOVANOVIC
6291 STF 1130 1000. 1981.1 0.811 328.6 15.7 0.379 MASON &
07417+0942 0.3600 1.858 52.3 346.1 1995.9271 18.7 0.381 HARTKOPF
I 879 38.71 1935.53 0.788 290.7 139.1 0.371 MASON &
11210-5429 9.2999 0.259 54.8 35.0 1997.1177 140.8 0.357 HARTKOPF
WOR 24 21.18 1986.02 0.637 104.3 19.9 0.384 DOCOBO
13320+3109 16.9972 0.272 150.7 258.3 1997.391 14.0 0.374 & BALEGA
HWE 28 AB 292.11 1957.55 0.686 111.5 309.5 0.958 LING &
13535-3540 1.2324 1.329 71.8 93.5 1997.115 310.1 0.959 PRIETO
RST 4529 22.99 1993.57 0.506 14.7 250.7 0.186 DOCOBO &
14310-0548 15.6590 0.244 49.9 119.4 1997.394 265.1 0.193 TAMAZIAN
9380 STF 1879 253.5 1866.0 0.699 251.2 86.5 1.686 MASON &
14463+0940 1.4229 1.111 117.7 327.8 1997.47 86.3 1.690 HARTKOPF
9397 A 2983 9.98 1988.059 0.491 142.3 302.0 0.061 BALEGA &
14493+1014 36.0722 0.127 45.8 156.8 1997.394 18.1 0.072 VASYUK
HJ 4707 346.0 1933.9 0.390 60.7 286.4 0.821 MASON &
14542-6625 1.0405 1.577 113.8 359.4 1997.1180 285.0 0.841 HARTKOPF
9453 BU 239 429.19 2217.25 0.337 126.6 359.5 0.527 LING &
14587-2739 0.8388 0.836 66.9 75.5 1998.137 0.2 0.523 PRIETO
COU 985 27.17 1993.65 0.772 175.7 32.4 0.173 DOCOBO
16384+3514 13.2499 0.185 50.1 82.2 1997.391 38.1 0.185 & LING
10990 BU 1125 AB 264.38 2070.67 0.264 7.1 122.9 0.561 POPOVIC
18018+0118 1.3617 0.797 53.3 232.5 1998.402 124.5 0.563 & ZIVKOV
11073 HU 1290 294.94 1985.03 0.257 110.5 348.0 0.206 ZIVKOV &
18054+6216 1.2206 0.475 120.4 80.6 1998.402 344.9 0.212 PAVLOVIC
13649 BU 984 286.58 2080.01 0.088 44.0 267.5 0.380 PAVLOVIC
20176+2622 1.2562 0.800 70.2 3.0 1994.80 269.4 0.370 & POPOVIC
COU 1962 23.65 1979.14 0.340 111.7 307.6 0.142 DOCOBO
20311+3333 15.2220 0.188 73.0 336.4 1994.791 318.2 0.098 & LING
14333 J 194 143.40 1957.50 0.188 27.9 173.5 0.617 DOCOBO
20494+1124 2.5105 0.792 121.0 111.6 1994.86 171.4 0.606 & LING
17052 A 2700 30.16 1990.48 0.314 37.7 257.0 0.180 DOCOBO
23517-0637 11.9363 0.180 145.2 11.4 1995.85 248.4 0.194 & LING
17052 A 2700 30.00 1960.35 0.305 24.0 257.8 0.171 MASON &
23517-0637 12.0000 0.173 149.8 357.8 1995.85 248.5 0.184 HARTKOPF
===================================================================================
NEW DOUBLE STAR
Discovered by: Rade Pavlovic with Refractor Zeiss 65/1055 cm at Belgrade
STAR Mgn Sp Coord. 2000 1990+ theta rho
--------------------------------------------------------------------------
PAV 2 10.0 - 11.2 -- 17 18 36.6 N 32 28 17 7.502 302.8 3.50
===================================================================================
NOTE
Paper by GILI, R. & COUTEAU, P. : "Measurements of double stars made at Nice
Observatory with the 74 and 50 cm refractors". Astron. Astrophys. Suppl. Ser.
126, 1 (1997) was missed in PAPERS PUBLISHED IN 1997 (Information Circular No. 134).
===================================================================================
The deadline for contributions to Information Circular No. 136 is:
October 15th 1998
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 136 (OCTOBER 1998)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1998 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 1999
--------------------------------------------------------------------------------------
RST 4188 466.03 2395.22 0.782 113.3 23.2 0.493 OLEVIC
01528-0447 0.7725 0.662 47.5 124.0 1995.91 23.6 0.497 JOVANOVIC
3007 A 998 158.24 2010.16 0.692 170.8 218.8 0.129 PAVLOVIC
04089+4614 2.2750 0.281 123.8 46.9 1989.813 214.4 0.127
3228 BU 1186 410.67 1948.17 0.210 170.2 75.7 0.143 POPOVIC &
04275+1113 0.8766 0.773 102.2 27.3 1995.921 70.5 0.145 PAVLOVIC
4002 McA 18 Aab,c 19.24 1979.08 0.047 126.5 118.7 0.049 OLEVIC &
05244-0224 18.7138 0.059 103.7 36.5 1995.932 110.5 0.037 JOVANOVIC\
CHARA 26 14.18 1984.40 0.237 14.4 100.4 0.032 OLEVIC &
07269+2015 25.3939 0.061 46.6 111.4 1995.9215 154.4 0.039 JOVANOVIC
COU 1757 49.70 2000.80 0.536 13.3 240.6 0.090 MANTE
14260+4213 7.2435 0.192 46.1 304.5 1996.415 265.4 0.071
9532 B 2351 Aa 23.47 1994.57 0.245 179.0 117.2 0.107 MASON &
15123-1947 15.3387 0.131 152.5 345.6 1997.1322 98.3 0.112 HARTKOPF
COU 612 56.00 1971.07 0.405 164.4 207.8 0.252 DOCOBO
15390+2545 6.4286 0.212 137.7 131.2 1996.342 204.8 0.257 & LING
COU 1291 49.62 2011.71 0.302 122.2 288.0 0.174 DOCOBO
17075+3810 7.2551 0.169 61.2 282.4 1996.415 291.1 0.175 & LING
KUI 83 23.99 1961.21 0.205 334.5 124.1 0.343 MASON &
17370+2743 15.0063 0.288 164.2 23.2 1997.7198 114.0 0.337 HARTKOPF
CHARA 63 19.15 1999.73 0.008 63.2 230.5 0.082 OLEVIC &
17375+2419 18.8005 0.092 115.2 241.0 1995.1673 218.7 0.068 JOVANOVIC
11023 STF 2275 525.46 2012.87 0.477 131.6 283.1 0.153 POPOVIC
18033+3921 0.6851 0.679 78.0 142.8 1992.323 285.4 0.162
12746 HU 953 300.84 2009.73 0.449 8.5 287.7 0.254 ZIVKOV &
19389+3514 1.1967 0.736 54.7 314.7 1995.62 292.9 0.255 POPOVIC
FIN 328 28.24 2002.70 0.392 152.0 37.2 0.241 MASON &
21044-1951 12.7479 0.266 161.5 219.3 1996.5377 22.3 0.219 HARTKOPF
===================================================================================
NOTES CONCERNING THE PREVIOUS CIRCULAR
1. Regarding to Olevic & Jovanovic's orbit for McA 13 Aa, there is an earlier orbit
based on speckle and radial velocity data of Mason et al. (A. J. 1997, 114, 1607).
Olevic & Jovanovic's orbit is no improvement and was included in I. C. No. 135 by
printing error.
2. Dr. B. Mason notes that the double star announced by Dr. R. Pavlovic may be the
known double star L 15, the coordinates, magnitudes and relative position are all
very similar.
3. The orbit calculated by Olevic & Jovanovic for ADS 2849 (03545+0511) corresponds
to the pair BC.
===================================================================================
IN MEMORIAM, DR. D. J. ZULEVIC (1937 - 1998)
Danilo J. Zulevic, Astronomer at Belgrade Observatory died unexpectedly on July 14,
1998. He made over 4000 measures of double stars using filar micromerer at Zeiss
Refractor 65/1055cm of Belgrade Observatory. In IAU Comm. 26 Information Circular's
(No 50 - 132) he published 58 orbits by 53 binary stars and the duplicity of the
star BD +33 3323.
G.M. Popovic
===================================================================================
ANNOUNCEMENT
The United States Naval Observatory (USNO) maintains the Washington Double Star
Catalog (WDS) which is the world's principal database of astrometric double and
multiple star data. The WDS Catalog contains positions (J2000), discoverer
designations, epochs, position angles, separations, magnitudes, spectral types,
proper motions, and, when available, Durchmusterung numbers and Notes for the
components of more than 81,000 systems based on more than 480,000 means.
In the past only the most recent (1996.0) published version
(http://aries.usno.navy.mil/ad/wds/wds.html : A&AS, 125, 523; 1997) was
available. We are now making available on the web
(http://aries.usno.navy.mil/ad/wds/wdsnew.html) our working version of the WDS.
This contains the most recent observational data available and includes systems
newly discovered by the Hipparcos satellite. While Hipparcos did not provide
discovery designations these are the primary system identifier in visual double
star astronomy. A cross reference file of these 3406 systems containing the
abbreviated coordinate, as well as the HDS and HIP numbers is provided. A cross
reference of WDS entries which had Hipparcos problem solutions (i.e., the G, X,
O, V double star solutions as well as those which were suspected non-single) is
also available.
Also, new to the WDS is an additional indicator in columns 100-102. This ``D''
note code indicates the system has a separate Delta-M determined (in addition to
those determined during astrometric measures). These results, primarily from
Charles Worley's Delta-m catalog plus other lunar occultation and
interferometric determinations will eventually be incorporated in a weighted
scheme for the magnitude listings of the WDS data line.
Addition of the Delta-m information as well as other more significant changes to
the WDS database is currently under consideration. The input from regular users
of the database and other interested parties is greatly appreciated in our
efforts to make the WDS as helpful and user-friendly as possible. Please provide
comments on the format of the WDS, missed references, or any other items of
interest to you on our Comment form.
Information is being added to the database on a continuing basis, and this
edition of the WDS will also be updated regularly.
In addition to the WDS Hipparcos problem star cross reference we will also be
adding a preliminary version of the 5th Orbit Catalog to this site soon.
You may request a reasonable amount of information from the double star catalog
by e-mail. While our turn around on email requests is less than 24 hours, it is
our hope to eventually add cgi scripts so the user may get data immediately.
If you have any comments or questions we would be grateful to receive them via
email (bdm@draco.usno.navy.mil), postal mail (Brian D. Mason, Astrometry
Department, U. S. Naval Observatory, 3450 Massachusetts Avenue NW, Washington DC
20392-5420), or via our web comment form
(http://aries.usno.navy.mil/ad/wds/wds_comment.html).
Brian Mason
bdm@draco.usno.navy.mil
Astrometry Dept.,
US Naval Observatory
3450 Massachusetts Ave., NW
Washington, DC 20392-5420
USA
===================================================================================
The deadline for contributions to Information Circular No. 137 is:
February 15th 1999
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 137 (FEBRUARY 1999)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1999 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2000
--------------------------------------------------------------------------------------
1227 A 1913 AB 275.5 2088.9 0.188 117.2 135.4 0.295 MANTE
01345+3440 1.3067 0.33 111.2 94.3 1991.25 134.8 0.297
-- KUI 39 73.17 2020.48 0.463 63.5 138.3 0.569 MANTE
09175+7715 4.9198 0.592 137.8 67.7 1991.25 134.8 0.562
-- COU 2416 61.68 1992.74 0.446 81.7 41.0 0.165 MANTE
20151+3742 5.8366 0.283 52.7 221.2 1993.663 49.2 0.189
13611 A 2095 AB 105.51 1916.57 0.890 138.4 151.7 0.233 LING
20157+4339 3.4120 0.454 94.9 94.6 1997.68 151.2 0.236
-- COU 537 45.43 1993.67 0.578 63.4 264.1 0.145 DOCOBO
22077+2622 7.9243 0.180 39.5 94.9 1995.607 271.2 0.156 & LING
15707 STT 464 1360.20 1985.74 0.557 51.9 171.6 0.265 LING &
22113+4010 0.2647 0.900 52.8 94.3 1995.79 173.1 0.268 PRIETO
===================================================================================
ANNOUNCEMENT
The CATALOGUE DE 2700 ETOILES DOUBLES COU is now available. This is the third updated
edition of COU double stars catalogue, revised and including trigonometric parallaxes,
astrometric and photometric parameters measured by Hipparcos satellite for 800 COU
stars.
It can be obtained upon request from:
Observatoire de la Cote d'Azur
P. O. Box 4229
06304 Nice Cedex, France
The price is 400 FFr
P. Couteau
===================================================================================
PAPERS PUBLISHED IN 1998
1) ABAD, C., DOCOBO, J. A. & DELLA PRUGNA F.: "CCD and micrometric observations of
visual double stars". Astron. Astrophys. Suppl. Ser. 133, 71-79 (1998)
2) ALZNER, A.: "Measurements of double stars 1993.67 - 1998.13". Astron. Astrophys.
Suppl. Ser. 132, 237-252 (1998)
3) ALZNER, A.: "Orbital elements of 9 visual double stars". Astron. Astrophys.
Suppl. Ser. 132, 253-254 (1998)
4) ANGELOV, T.: "On the distribution of visual double stars".
Serbian Astronomical Journal, 157, 31-34 (1998)
5) BARLOW, D. J., SCARFE, C. D. & FEKEL, F. C.: "Physical properties of the binary
star 12 Persei." Astron. J. 115, (6), 2555-2560 (1998)
6) BENEST, D: "Planetary orbits in the elliptic restricted problem. IV. The ADS 12033
system". Astron. Astrophys. 332, 1147-1152 (1998)
7) CARBILLET, M. et al.: "Speckle imaging of binary stars: Use of ratios of twofold
probability density functions". Astron. Astrophys. Suppl. Ser. 127, 569-580 (1998)
8) DOCOBO, J. A.: "Micrometer measurements of double stars from the Spanish
observatories at Calar Alto and Santiago de Compostela". Astron. Astrophys. Suppl.
Ser. 130, 117 (1998)
9) DOCOBO, J. A. et al.: "Photometric and polarimetric observations of double and
multiple stars". Astrofizika 41, 389-398 (1998)
10) FERNANDES, J. et al.: "Fundamental stellar parameters for nearby visual binary
stars: $\eta$ Cas, $\xi$ Boo, 70 Oph and 85 Peg". Astron. Astrophys. 338, 455-464
(1998).
11) FRANZ, O. G. et al. : "The first definitive binary orbit determined with the
Hubble Space Telescope fine guidance sensors: WOLF 1062 (Gliese 748)" Astron. J.
116, (3), 1432-1439 (1998)
12) HEINTZ, W.D.: "Observations of double stars. XVIII". Astrophys. J. Suppl. Ser.
117, 587-598 (1998).
13) HERSHEY, J. L. & TAFF, L. G. : "Hubble Space Telescope fine guidance sensor
astrometry of the low-mass binary L722-22." Astron. J. 116, (3), 1440-1446 (1998)
14) HUMMEL, C. A. et al. : "Navy prototipe optical interferometer observations of the
double stars Mizar A and Matar." Astron. J. 116, (5), 2536-2548 (1998)
15) IZMAILOV, I. S. et al.: "Using a CCD camera in Pulkovo programs of observations of
binary and multiple stars and satellites of major planets with the 26-inch refractor".
Astron. Letters 24 (5), 665-672 (1998).
16) KIYAEVA, O. V., TOKOVININ, A. A. & KALINICHENKO, O. A.: "The triple system
ADS 9167". Astron. Letters 24 (6), 753-757 (1998).
17) LING, J. A. & PRIETO, C: "Micrometer measusrements of southern double stars made
at the national Observatory of Llano del Hato, Venezuela". Rev. Mexicana Astron.
Astrof. 34, 111-115 (1998)
18) MALKOV, O., PISKUNOV, A. & ZINNECKER, H.: "On the luminosity ratio of pre-main
sequence binaries". Astron. Astrophys. 338, 452-454 (1998).
19) MARTIN, C. & MIGNARD, F.: "Mass determination of astrometric binaries with
Hipparcos. II Selection of candidates and results". Astron. Astrophys. 330, 585-599
(1998)
20) MARTIN, C. et al. : "Mass determination of astrometric binaries with Hipparcos.
III New results for 28 systems". Astron. Astrophys. Suppl. Ser. 133, 149-162 (1998)
21) MASON, B. D. et al.: "ICCD Speckle Observations of Binary Stars XIX. An
Astrometric/Spectroscopic Survey of O Stars." Astron. J. 115, (2), 821-847 (1998).
22) MASON, B. D. et al.: "A multiplicity survey of chromospherical active and inactive
stars." Astron. J. 116, (6), 2965-2974 (1998).
23) OLEVIC, D. & JOVANOVIC, P.: "New and recalculated orbital elements of 5
double stars". Serbian Astronomical Journal 158, 73-79 (1998)
24) PETR, M. G. et al. : "Binary stars in the Orion trapezium cluster" Astrophys. J.
500, 825-837 (1998)
25) POPOVIC, G. M.: "Inclination of the Orbital Planes of Visual Binaries".
Serbian Astronomical Journal, 157, 13-17 (1998)
26) POPOVIC G. M., PAVLOVIC, R. & ZIVKOV, V.: "Catalogue of Double Star
Observations made at the Belgrade Observatory - CDSO". Publ. Astron. Obs. Belgrade,
60, 114-117 (1998)
27) POPOVIC, G. M. & PAVLOVIC, R.: "Micrometer and CCD measurements of double
stars (Series 51).", Serbian Astronomical Journal, 158, 67-71 (1998)
28) POURBAIX, D.: "Simultaneous least-squares adjustement of visual and spectroscopic
observations of binary stars". Astron. Astrophys. Suppl. Ser. 131, 377-382 (1998)
29) SCHOELLER, M. et al.: "Diffraction-limited speckle masking interferometry of
binary stars with the SAO 6-m telescope". Astron. Letters 24 (3), 283-287 (1998).
30) SHATSKII, N. I.: "The nature of visual components in 82 multiple systems".
Astron. Letters 24 (2), 257-269 (1998).
31) SHATSKII, N. I. & TOKOVININ, A. A.: "A test of Hipparcos parallaxes on multiple
stars". Astron. Letters 24 (5), 673-676 (1998).
32) SINACHOPOULOS, D & VAN DESSEL, E.: "CCD astrometry and UBV photometry of visual
binaries. II. Visual double stars with mainly G-type primaries and relatively
small angular separation". Astron. Astrophys. Suppl. Ser. 130, 229-304 (1998)
33) THOREL J.-C.: "Measures of visual double stars made with the 50 cm refractor at
the Nice Observatory (2nd series)". Astron. Astrophys. Suppl. Ser. 132, 29-30
(1998)
34) TOKOVININ, A. A.: "On the distrubution of orbital eccentricities of wide visual
binary stars". Astron. Letters 24 (2), 178-179 (1998).
35) TOKOVININ, A. A.: "New spectroscopic components in six multiple systems".
Astron. Letters 24 (3), 288-295 (1998).
36) TOKOVININ, A. A., SHATSKII, N. I. & MAGNITSKII, A. K.: "ADS 9731: A new sextuple
system". Astron. Letters 24 (6), 795-801 (1998).
37) VALTONEN, M. J.: "Mass ratios in multiple star systems". Astron. Astrophys.
334, 169-172 (1998)
38) WORLEY, C. E. & MASON, B. D. : "Micrometer measures of double stars." Astron.
J. 116, (2), 971-930 (1998)
===================================================================================
The deadline for contributions to Information Circular No. 138 is:
June 15th 1999
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 138 (JUNE 1999)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1999 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2000
--------------------------------------------------------------------------------------
1081 FIN 337 BC 27.78 1994.00 0.163 258.8 269.1 0.111 MASON &
01198-0029 12.9573 0.117 21.9 288.0 1994.7085 281.8 0.114 HARTKOPF
-- DAW 31 AB 4.56 1932.59 0.301 57.4 297.5 0.218 MASON &
01350-2955 78.8868 0.178 21.8 51.3 1991.7129 354.1 0.176 HARTKOPF
-- COU 750 40.00 2002.46 0.778 27.4 198.9 0.163 DOCOBO
01450+2703 9.0000 0.298 81.9 263.2 1995.9155 201.7 0.153 & LING
4299 A 494 AB 20.15 1959.04 0.399 98.2 335.5 0.046 MASON &
05428-0649 17.8691 0.206 71.7 273.4 1997.8271 72.4 0.078 HARTKOPF
-- COU 1241 26.30 1993.10 0.563 89.7 63.9 0.174 MANTE
06598+3141 13.6867 0.181 120.2 263.9 1991.169 57.8 0.174
-- FIN 326 18.29 1965.74 0.466 174.5 345.4 0.121 MASON &
09442-2746 19.6879 0.123 123.0 316.0 1996.1810 332.4 0.090 HARTKOPF
7785 A 1993 142.61 2009.78 0.655 177.3 162.6 0.271 LING
10288+4558 2.5244 0.423 49.6 80.8 1997.31 165.7 0.260
9557 STF 3091 AB 148.00 2032.16 0.820 222.8 227.1 0.580 MASON &
15161-0454 2.4324 0.708 93.1 104.9 1997.537 227.0 0.581 HARTKOPF
9918 FIN 384 Aa 9.91 1990.13 0.025 119.9 153.9 0.055 MASON &
16057-0617 36.346 0.065 132.5 354.6 1996.1842 124.5 0.064 HARTKOPF
10385 HU 169 98.80 1891.82 0.464 209.4 242.3 0.130 MASON &
17115-1629 3.6438 0.241 122.2 232.6 1996.5289 237.0 0.144 HARTKOPF
10561 A 2244 44.96 1925.68 0.621 184.4 123.0 0.254 MASON &
17283-2058 8.0071 0.172 17.8 102.9 1990.3414 125.7 0.250 HARTKOPF
11643 B 405 87.95 1967.62 0.559 336.5 159.6 0.501 MASON &
18463-2721 4.0933 0.343 135.3 14.0 1991.25 158.5 0.506 HARTKOPF
-- KUI 89 85.52 1993.11 0.486 51.8 72.1 0.142 MASON &
18594-1250 4.2094 0.224 34.7 315.0 1996.7011 79.4 0.147 HARTKOPF
-- COU 1462 22.81 1993.89 0.672 38.0 51.7 0.182 MANTE
19089+3404 15.7798 0.314 83.2 275.3 1995.4397 56.4 0.156
-- FIN 327 5.72 1984.29 0.710 259.0 76.8 0.111 MASON &
19253-2431 62.9712 0.069 97.3 10.7 1992.4551 73.9 0.079 HARTKOPF
16672 MCA 74 Aa 6.29 1980.87 0.175 156.9 326.8 0.164 MASON &
23191-1327 57.2765 0.189 46.0 223.1 1995.7625 33.4 0.119 HARTKOPF
-- COU 439 64.79 2021.76 0.312 12.0 259.4 0.150 DOCOBO
23199+2844 5.5564 0.195 53.6 45.3 1995.7706 264.9 0.145 & LING
16700 HU 95 257.20 1943.31 0.560 65.9 303.4 0.506 MASON &
23218-1217 1.3997 0.500 144.8 339.4 1991.25 302.5 0.512 HARTKOPF
-- RST 4136 AB 54.83 1955.05 0.066 194.9 355.4 0.126 MASON &
23586-1408 6.5662 0.191 106.9 309.3 1996.5405 350.4 0.110 HARTKOPF
=====================================================================================
NEW DOUBLE STAR
Discovered by: P. Couteau with 76 cm refractor at Nice Observatory
(This star was discovered observing COU 554)
STAR Oxford Mgn Coord. 2000 1990+ theta rho
-------------------------------------------------------------------------------
COU 2702 +29 6496 10.0 - 12.2 02 52.7 + 29 14 9.06 276. 0.65
=====================================================================================
ANNOUNCEMENT
A proposed Joint Discussion (JD) for the next IAU General Assembly is in the
planning stages. The goal of the JD is to develop a designation scheme for
stellar companions which addresses all techniques, and all stellar companions,
both stellar and sub-stellar. This could have implications for the designation
of binary stars. The home page for this proposed JD can be found at
http://aries.usno.navy.mil/ad/wds/iaujd.html .
As the representative of Commission 26 on the SOC I am soliciting opinions of
all interested double star astronomers. Please send them via email or postal
mail to the address below.
Brian D. Mason phone: 202-762-1412
Astrometry Department fax: 202-762-1516
U. S. Naval Observatory email: bdm@draco.usno.navy.mil
3450 Massachusetts Avenue NW
Washington DC 20392-5420
USA
New WDS web page: http://aries.usno.navy.mil/ad/wds/wdsnew.html
===================================================================================
The deadline for contributions to Information Circular No. 139 is:
October 15th 1999
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 139 (OCTOBER 1999)
NEW ORBITS
ADS Name P (yr) T e W(2000) 1999 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2000
--------------------------------------------------------------------------------------
281 BU 1015 125.41 1961.64 0.522 302.7 96.0 0.421 SEYMOUR &
00206+1219 2.8707 0.325 29.5 359.2 1996.6510 97.2 0.426 HARTKOPF
732 A 2307 57.67 1956.32 0.515 218.4 59.3 0.189 SEYMOUR &
00533+0405 6.2429 0.228 72.5 15.1 1995.9316 61.8 0.171 HARTKOPF
1077 A 313 131.16 2018.40 0.160 168.8 349.1 0.252 SEYMOUR
01196-0520 2.7448 0.273 130.1 249.2 1997.0300 347.1 0.250 & MASON
3465 A 2621 310.47 1699.04 0.372 90.0 101.4 0.134 SEYMOUR &
04496+0212 1.1595 0.212 45.8 44.2 1993.0924 103.3 0.133 HARTKOPF
3596 STT 93 1467.52 1914.22 0.649 241.3 245.1 1.348 SEYMOUR
05005+0506 0.2453 2.530 99.7 249.3 1997.1541 245.0 1.362 & MASON
4115 STF 728 613.69 2297.03 0.221 217.1 46.1 1.161 SEYMOUR &
05308+0557 0.5866 1.604 96.6 302.5 1998.0900 46.0 1.172 HARTKOPF
5949 A 2855 65.68 1958.26 0.200 52.6 236.4 0.406 SEYMOUR
07168+0059 5.4814 0.350 144.3 325.2 1991.8970 233.1 0.403 & MASON
6347 HO 247 350.80 1892.44 0.291 117.2 246.3 0.454 SEYMOUR &
07461+2107 1.0262 0.561 52.9 339.8 1995.9216 247.2 0.459 HARTKOPF
COU 966 90.43 2036.13 0.304 63.6 42.5 0.161 MANTE
12316+3201 3.9811 0.126 172.4 183.0 1997.268 40.2 0.160
9220 A 1102 393.07 1931.22 0.531 252.4 93.0 0.458 SEYMOUR
14179+6914 0.9159 0.458 138.6 29.3 1994.4500 92.4 0.452 & MASON
COU 1289 15.99 2001.05 0.832 58.2 57.9 0.080 DOCOBO
16584+3943 22.5141 0.076 116.4 149.1 1996.4320 50.2 0.050 & LING
COU 1289 37.63 2024.43 0.183 74.2 240.0 0.088 DOCOBO
16584+3943 9.5668 0.137 99.9 102.3 1996.4320 235.3 0.073 & LING
COU 1785 34.83 1997.67 0.413 51.7 240.7 0.052 DOCOBO
18035+4032 10.3359 0.130 82.4 195.0 1995.6115 254.5 0.029 & LING
12540 McA 55 Aa 96.84 2010.27 0.719 98.8 131.2 0.375 HARTKOPF
19307+2758 3.7174 0.586 118.0 77.2 1997.4603 128.2 0.369
CHR 87 69.04 1996.73 0.212 183.1 86.3 0.076 HARTKOPF
19336+3846 5.2144 0.157 52.4 247.4 1997.4602 99.3 0.077
13961 SEE 512 88.39 1960.25 0.104 127.8 271.4 0.092 SEYMOUR
20325-1637 4.0729 0.277 100.6 94.2 1996.5320 263.4 0.079 & MASON
CHR 114 85.25 1991.31 0.252 255.5 223.1 0.123 HARTKOPF
22383+4511 4.2228 0.162 35.9 269.0 1996.5321 228.7 0.128
16708 HU 295 64.62 1941.29 0.140 276.3 259.1 0.219 SEYMOUR &
23227-1502 5.5709 0.408 77.6 354.6 1997.8292 262.7 0.248 HARTKOPF
=====================================================================================
SPECKLE CAMERA FOR THE ASTRONOMICAL OBSERVATORY ``RAMON MARIA ALLER"
A speckle camera for wide range of astronomical applications (binary star
measurements, in particular) was developed for the Astronomical Observatory ``R. M.
Aller" of the University of Santiago de Compostela (Spain) and constructed in
cooperation with Special Astrophysical Observatory (Russia). It was successfully
tested in Cassegrain focus of the Observatorio Astronomico Nacional 1.52m telescope at
Calar Alto (Spain) during a recent observational run in September, 1999.
With the microscope objective magnification 20x the scale at the detector plane was
0.013 arcsec per pixel. A wheel of interference filters is used in the camera for
bandpass selection while a set of prisms compensates the atmospheric dispersion.
The detector used is a 3-stage electrostatically focused image intensifier with a
20 mm multialcali photocathode. It is optically coupled with SensiCam CCD camera
manufactured by PCO Computer Optics GmbH, Germany.
Up to 5 frames per second (512x512 pix. digitized at 12 bits) can be stored on the
hard disk(s) and copied later to an Exabyte Mammoth-LTVDe tape drive.
The camera is completely remote controlled.
The speckle masking image reconstruction procedure will be used to measure relative
position of the components in binary system as well as estimate their brightness
difference.
First observations of about 100 binaries using the classical speckle technique were
performed, and the diffraction limited resolution of 0.08 arcsec at 600 nm was
achieved under moderate seeing conditions for all observed pairs. Stars of 10th
magnitude were easily observed during the observing run and we expect those of 12th
magnitude can be measured at that telescope under better seeing conditions.
J. A. Docobo, V.Tamazian, P.Abelleira, J.Blanco, V. Lanchares
Observatorio Astronomico ``R.M.Aller"
P.O. Box 197, Universidade de Santiago de Compostela, SPAIN
(e-mail: oadoco@usc.es)
Yu.Balega, A.Maximov, V.Vasyuk
Special Astrophysical Observatory
Zelenchuk, 357147, RUSSIA
(e-mail: balega@sao.ru)
=====================================================================================
MICROMETER MEASUREMENTS OF VISUAL DOUBLE STARS
In the following Table, 46 measurements of 17 visual binary stars performed with
74 cm (N) and 50 cm (n) refractors at the Cote d'Azur Observatory (France) in June,
1991 are given.
For each star the first measurement has been carried out by J. A. Docobo, the
second one by J. F. Ling and the third, if any, by V. Lanchares.
J. A. Docobo and J. F. Ling
Observatorio Astronomico ``R. M. Aller"
Universidade de Santiago de Compostela, SPAIN
V. Lanchares
Universidad de La Rioja. Logrono. Spain
Table
WDS Name ADS 1991. theta rho No.
+ (deg) (arcsec) nights
-------------------------------------------------------------------
13346+1044 BU 612 AB 8987 .433 242.9 0.24 1N
244.9 0.24 1N
242.2 0.25 1N
13375+3617 STF 1768 AB 8974 .433 103.6 1.69 1n
103.6 1.97 1n
104.4 1.66 1n
14323+2641 A 570 9301 .436 213.4 0.22 1N
213.1 0.24 1N
14455+4222 STT 285 9378 .433 121.5 0.37 1N
121.8 0.41 1N
14489+0557 STF 1883 9392 .433 285.7 0.63 1N
285.6 0.72 1N
284.0 0.70 1N
14534+1543 STT 288 9425 .433 168.0 1.20 1n
165.9 1.41 1n
165.4 1.20 1n
15161-0454 STF 3091 AB 9557 .433 235.7 0.63 1n
234.4 0.58 1n
236.3 0.60 1n
15232+3018 STF 1937 AB 9617 .436 30.4 1.03 1N
30.6 1.04 1N
29.8 1.04 1N
15416+1941 HU 580 AB 9744 .436 69.6 0.24 1N
69.5 0.27 1N
16515+0113 STT 315 10230 .436 326.6 0.39 1N
326.2 0.35 1N
17121+4544 KUI 79 AB .436 334.9 0.27 1N
334.7 0.27 1N
332.8 0.30 1N
18054+2332 STF 2272 11046 .436 206.7 1.61 1N
207.5 1.67 1N
205.7 1.56 1N
18433+1847 COU 816 .436 303.5 0.29 1N
305.1 0.29 1N
303.5 0.32 1N
18466+3821 HU 1191 11680 .436 288.8 0.28 1N
290.1 0.25 1N
19394+2216 STF 2556 12752 .436 17.4 0.32 1N
15.0 0.31 1N
17.5 0.34 1N
20199+4522 STT 406 13723 .436 110.9 0.46 1n
111.6 0.52 1n
111.9 0.42 1n
21439+2751 HO 166 15267 .436 65.3 0.34 1N
66.4 0.34 1N
66.4 0.33 1N
===================================================================
The deadline for contributions to Information Circular No. 140 is:
February 15th 2000
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 140 (FEBRUARY 2000)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2000 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2001
--------------------------------------------------------------------------------------
COU 247 280.00 1990.21 0.426 21.3 307.6 0.300 BLANCO
00094+1907 1.2857 0.846 124.9 47.1 1999.712 302.3 0.299
1522 STF 183 AB 332.79 1996.42 0.523 170.3 156.2 0.346 SEYMOUR
01551+2847 1.0818 0.489 121.3 290.5 1997.685 155.3 0.348 & MASON
2612 STF 400 AB 244.52 1939.07 0.669 82.6 265.6 1.416 SEYMOUR
03350+6002 1.4723 1.052 67.1 35.1 1996.0601 265.8 1.425 & MASON
COU 691 36.52 2003.74 0.600 52.7 221.4 0.108 DOCOBO
03423+3141 9.8576 0.167 73.9 252.0 1996.866 226.7 0.103 & LING
4971 A 2667 102.34 1931.89 0.365 110.0 228.7 0.278 SEYMOUR
06214+0216 3.5177 0.400 59.8 253.9 1997.1171 232.0 0.282 & MASON
COU 768 26.64 1982.71 0.502 60.1 160.8 0.135 DOCOBO
06503+2410 13.5135 0.118 144.2 59.8 1996.872 153.2 0.129 & LING
5726 A 1959 32.11 1972.53 0.019 169.6 98.6 0.120 SEYMOUR
07036+3941 11.2115 0.247 61.9 333.0 1995.1462 118.4 0.138 & MASON
7044 VDK 3 127.76 2009.58 0.891 176.8 150.9 1.603 SEYMOUR
08507+0752 2.8178 2.498 59.1 102.8 1997.275 152.6 1.523 & MASON
7629 I 292 823.31 1971.04 0.832 124.6 316.8 0.638 SEYMOUR
10043-2823 0.4373 1.457 138.4 52.1 1997.1229 315.9 0.655 & MASON
7915 HO 532 AB 160.67 1972.58 0.860 110.9 72.3 0.624 MANTE
10454+3831 2.2406 1.791 100.1 280.1 1995.1411 70.6 0.615
KUI 93 68.21 1962.76 0.976 151.9 313.2 0.193 DOCOBO
19411+1349 5.2778 0.099 22.3 339.0 1995.7703 313.5 0.192 & LING
=====================================================================================
PAPERS PUBLISHED IN 1999
1) ABT, H. A. & WILLMARTH D. W.: "Binaries in the Praesepe and Coma Star Clusters
and Their Implications for Binary Evolution". Astrophys. J. 521, 682 (1999).
2) ARISTIDI, E. et al.: "Speckle observations of double and multiple stars at Pic du
Midi: Measurements during 1995 and 1997 and new orbits". Astron. Astrophys. Suppl.
Ser. 134 (3), 545 (1999).
3) BALEGA, I. I. et al.: "Binary star Speckle measurements during 1992-1997 from SAO
6-m and 1-m telescopes in Zelenchuk". Astron. Astrophys. Suppl. Ser. 140 (3), 287
(1999).
4) BENDINELLI, O. et al.: "A method to analyze adaptive optics
images of binary stars". Astron. Astrophys. Suppl. Ser. 135 (1), 187 (1999).
5) BODEN, A. F. et al. : "The visual orbit of 64 Piscium". Astrophys. J. 527, 360
(1999).
6) BODEN, A. F. et al. : "The visual orbit of iota Pegasi". Astrophys. J. 515, 356
(1999).
7) CUYPERS, J. & SEGGWISS, W. : "CCD photometry and astrometry of visual double and
multiple stars of the HIPPARCOS catalogue. II. CCD photometry and differential
astrometry of 288 southern ``Intermediate" systems". Astron. Astrophys. Suppl.
Ser. 139 (3), 425 (1999).
8) DELFOSSE, X. et al.: "Accurate masses of very low mass stars II. The very low
mass triple system GL 866". Astron. Astrophys. 350, L39 (1999).
9) DOCOBO, J. A. & LING J. F.: "Orbits of five visual double stars". Astrophys. J.
Suppl. Ser. 120, 41 (1999).
10) DOCOBO, J. A., PRIETO, C. & LING J. F.: "The influence of mass loss on the
eccentricity of double star orbits". Astrophys. and Space Science 261, 205 (1999).
11) DOUGLASS, G. G. et al.: "Speckle interferometry at the US Naval Observatory. IV".
Astron. J. 118 (3), 1395 (1999).
12) FALIN, J. L. & MIGNARD, F. : "Mining in the Hipparcos raw data". Astron.
Astrophys. Suppl. Ser. 135 (2), 231 (1999).
13) FARAGGIANA, R. & BONIFACIO, P. C. : "How many lambda Bootis stars are binaries?".
Astron. Astrophys. 349, 521 (1999).
14) FEKEL, F. C. et al.: "Orbital elements and physical parameters of ten
chromospherically active binary stars". Astron. Astrophys. Suppl. Ser. 137 (2),
369 (1999).
15) GEHRZ, R. D. et al. : "Thermal infrared images of the remarkable young nearby
multiple star HD 98800". Astrophys. J. 512, L55 (1999).
16) GERMAIN, M. E., DOUGLASS, G. G. & WORLEY, C. E.: "Speckle interferometry at the
US Naval Observatory. II". Astron. J. 117 (4), 1905 (1999).
17) GERMAIN, M. E., DOUGLASS, G. G. & WORLEY, C. E.: "Speckle interferometry at the
US Naval Observatory. III". Astron. J. 117 (5), 2511 (1999).
18) HARTKOPF, W. I. et al.: "ICCD Speckle observations of binary stars. XXII. A survey
of Wolf-Rayet stars for close visual companions". Astron. J. 118 (1), 509 (1999).
19) HAUSER, H.M. & MARCY, G. W.: "The orbit of 16 Cygni AB". Pub. Astron. Soc. of the
Pacific 111 (757), 321 (1999).
20) HOLMAN, M. J. & WIEGERT, P. A.: "Long-term stability of planets in binary
systems". Astron. J. 117 (1), 621 (1999).
21) HORCH, E. et al.: "Speckle observations of binary stars with the wiyn telescope.
I. Measures during 1997". Astron. J. 117 (1), 548 (1999).
22) IWAMOTO, N. et al.: "A comparison of stellar evolution with binary systems".
Astrophys. J. 521, 297 (1999).
23) JASINTA, D.M.D., RAHARTO, M. & SOEGIARTINI, E. : " Photographic observations of
visual double stars". Astron. Astrophys. Suppl. Ser. 134 (1), 87 (1999).
24) JASINTA, D.M.D. & HIDAYAT, B. : " The photographic observations on the components
of Sirius". Astron. Astrophys. Suppl. Ser. 136 (2), 293 (1999).
25) KOPEIKIN, S. M., OZERNOY, L. M. : "Post-NewtonianTheory for Precision Doppler
Measurements of Binary Star Orbits". Astrophys. J. 523, 771 (1999).
26) KOVALEVA, D. A. & MALKOV, O. Y.: " On the possible multiplicity of the components
of some low-mass systems". Astron. Reports 43 (2), 100 (1999).
27) KRYMOLOWSKI, Y. & MAZEH, T.: "Studies of multiple stellar systems - II.
Second-order averaged Hamiltonian to follow long-term orbital modulations of
hierarchical triple systems". MNRAS, 304, 720 (1999).
28) LEONE, F. & CATANZARO, G. : "Orbital elements of binary systems with a chemically
peculiar star". Astron. Astrophys. 343, 273 (1999).
29) LU, W. & RUCINSKI, S. M.: "Radial velocity studies of close binary stars. I".
Astron. J. 118 (1), 515 (1999).
30) MASON, B.D., DOUGLASS, G.G. & HARTKOPF, W. I.: "Binary star orbits from speckle
interferometry. I. Improved orbital elements of 22 visual systems". Astron. J.
117 (2), 1023 (1999).
31) MASON, B.D. et al.: "Speckle interferometry of new and problem Hipparcos
binaries". Astron. J. 117 (4), 1890 (1999).
32) MOLENBERGHS, G., AERTS, C. & DE CAT, P.: "An improved method for the determination
of the orbital parameters of a binary system that contains a pulsating component".
Astron. Astrophys. Suppl. Ser. 135 (2), 383 (1999).
33) MORAN, C. et al.: "The orbital parameters of three new subdwarf B binaries".
MNRAS, 304, 535 (1999).
34) OBLAK, E. et al.: "CCD photometry and astrometry for visual double and multiple
stars of the HIPPARCOS catalogue. I. Presentation of the large scale project".
Astron. Astrophys. 346, 5230 (1999).
35) PENNY, L. R., GIES, D. R. & BAGNUOLO, W. G., JR. : "Tomographic Separation of
Composite Spectra. VI. The Physical Properties of the Massive Close Binary HD
152248". Astrophys. J. 518, 450 (1999).
36) PETROVA, A. V. & ORLOV, V. V.: "Apsidal motion in double stars. I. Catalog."
Astron. J. 117 (1), 587 (1999).
37) POURBAIX, D. : "Gamma Persei: a challenge for stellar evolution models". Astron.
Astrophys. 348, 127 (1999).
38) POURBAIX, D., NEUFORGE-VERHEECKE, C. & NOELS, A.: "Revised masses of alpha
Centauri". Astron. Astrophys. 344, 172 (1999).
39) RICHICHI, A. et al.: "New binary stars discovered by Lunar occultations". Astron.
Astrophys. 350, 491 (1999).
40) ROBERTS, L. C.: "Three methods of determining magnitudes of individual stars in
resolved binary systems". Pur. Astron. Soc. of the Pacific ,111 (759), 650 (1999).
41) ROBERTSON, J. G. et al.: "Interferometry and spectroscopy of beta Cen: a beta
Cephei star in a binary system*". MNRAS, 302, 245 (1999).
42) SALAMAN, M., MORLET, G. & GILI, R.: "CCD measurements of visual double star made
with 50 cm. refractor of the Nice Observatory". Astron. Astrophys. Suppl. Ser. 135
(3), 499 (1999).
43) SALIM, S. & GOULD, A. : "Saggitarius A ``visual binaries": A direct measurement
of the galactocentric distance". Astrophys. J. 523, 633 (1999).
44) SCALLY, A., CLARKE, C. & MCCAUGHREAN, M. J.: "Wide binaries in the Orion nebula
cluster". MNRAS, 306, 253 (1999).
45) SCHWEICKHARDT, J. et al.: "Revised mass determination of the super massive
Wolf-Rayet star WR 22". Astron. Astrophys. 347, 127 (1999).
46) SHATSKY, N. et al.: "UBV absolute CCD photometry and differential astrometry of
a sample visual double stars with A-type primaries". Astron. Astrophys. Suppl. Ser.
139 (1), 69 (1999).
47) SINACHOPOULOS, D. et al.: "CCD astrometry and instrumental DeltaV photometry of
visual double stars. V. Differential measurements of pairs with angular separations
1" to 4" ". Astron. Astrophys. Suppl. Ser. 136 (3), 525 (1999).
48) SMEKHOV, M. G.: "Spectroscopic Components in the Multiple Systems ADS 4200 and
ADS 12656". Astron. Letters 25 (8), 536 (1999).
49) SODERHJELM, S.: "Visual binary orbits and masses post Hipparcos". Astron.
Astrophys. 341, 121 (1999).
50) TAMAZIAN, V. S., DOCOBO, J. A. & MELIKIAN, N. : "Spectral, photometric and
polarimetric study of visual binary COU 14" Astrophys. J. 513, 933 (1999).
51) TAMAZIAN, V. S. & DOCOBO, J. A.: "Flare activity of visual binary COU 14"
Astrophys. and Space Science 261, 95 (1999).
52) TOKOVININ, A. A.: "New spectroscopic components in 8 multiple systems". Astron.
Astrophys. Suppl. Ser. 136 (2), 373 (1999).
53) TOKOVININ A. A.: " The visual orbit of HD 98800". Astron. Letters, 25 (10), 669
(1999).
54) TOKOVININ, A. A. et al.: "A near IR adaptive optics search for faint companions
to early-type multiple stars". Astron. Astrophys. 346, 481 (1999).
55) TORRES, G.: "Subestellar companion masses from minimal radial velocity or
astrometric information: a Monte Carlo approach.". Pub. Astron. Soc. of the
Pacific 111 (756), 169 (1999).
56) TORRES, G. et al.: "The nearby low-mass visual binary Wolf 424" Astron. J. 117
(1), 562 (1999).
57) WEIGELT, G. et al.: "Bispectrum speckle interferometry of the Orion Trapezium
stars: detection of a close (33 mas) companion of Theta (1) Ori C". Astron.
Astrophys. 347, 15 (1999).
===================================================================================
NOTE
J. F. Courtot reports that the following wide "CTT" pairs, noticed and measured in
Chaumont (France), in 1997, have been included in WDS Catalog.
===================================================================================
Name BD RA, Dec Theta Rho Mags Spectral
(2000) (deg) (") Type
-----------------------------------------------------------------------------------
CTT 1 +56 3129 00 00.3 +56 51 92 46.5 8.5 - 9.5 A2
CTT 2 +55 195 00 54.5 +56 19 42 62.0 7.2 - 9.8 A5+F5
CTT 3 +62 423 02 35.9 +63 38 88 88.1 7.9 - 8.3 A5
CTT 4 AB +33 994 05 17.5 +33 12 104 98.3 7.7 - 9.5 A2
CTT 4 AC " " 282 113.6 7.7 - 9.5 -
CTT 4 AD " " 270 102.8 7.7 - 9.5 -
CTT 4 AE " " 269 116.2 7.7 - 10.0 -
CTT 5 +47 4334 23 57.5 +48 17 325 33.8 9.3 - 9.5 M0
===================================================================================
The deadline for contributions to Information Circular No. 140 is:
June 15th 2000
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Fax: (81) 59 70 54
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
ISSN: 1024-7769