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The purpose of MASSIF is to measure masses of stellar
and substellar objects to high precision using state-of-the-art
astrometric and spectroscopic techniques. Key areas of research
include determining masses for the dominant members of the Galactic
population, the red dwarfs, and development of the mass-luminosity
relation for all stars.
Results
Team MASSIF Basics
Clusters Overview
MASSIF Clusters
| Orion |
05:32 -05:25 |
5 Myr |
400 pc |
Stassun |
| Pleiades |
03:44 +23:58 |
80 Myr |
120 pc |
Torres |
| M 7 |
17:54 -34:49 |
220 Myr |
240 pc |
James |
| Hyades |
04:24 +15:45 |
630 Myr |
50 pc |
Torres |
| M 67 |
08:47 +12:00 |
5000 Myr |
800 pc |
Benedict |
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| TW Hydrae |
DISCARDED |
10 Myr |
70 pc |
too sparse |
| IC 2602 |
DISCARDED |
20 Myr |
160 pc |
mu too low |
| IC 2391 |
08:38 -52:53 |
40 Myr |
160 pc |
possible? |
| NGC 0752 |
DISCARDED |
2700 Myr |
360 pc |
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MASSIF Special Samples
| OB Stars |
Gies, Mason |
| White Dwarfs |
Nelan, Subasavage |
| Red Dwarfs |
Henry, Bean |
| Subdwarfs |
Jao |
| Brown Dwarfs |
Golimowski |
| Exotics |
... all ... |
Construction Zone: Papers in Progress
- Todd: Improved Masses for GJ 22 AC, GJ 65 AB, GJ 234 AB, GJ 473 AB, and GJ 1245 AC
- Todd: First Orbits and Masses for GJ 54 AB, GJ 469 AB, GJ 1081 AB and G 250-29 AB
- Otto: Improved Masses for GJ 623 AB
- Otto: Definitive Masses for GJ 831 AB, and What About C?
- any?: The Special Cases of GJ 494, GJ 866, and GJ 1215
- Todd & Willie: The Mass-Luminosity Relation from End to End
The MASSIF (a principal mountain mass) shown above is part of the Antarctic peninsula. The photograph was taken by T. Henry in February 1995.
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