High-velocity OH/IR stars at the Galactic Centre.
Abstract
We present the results of a small survey for OH/IR stars at high radial velocities in the Galactic center region performed with the VLA and the Nancay telescope. We have detected two new OH/IR stars, one at a peculiar velocity of -309 km/s, the other at -355 km/s. These two objects and one previously detected high-velocity OH/IR star (OH 0.3-0.2, Baud et al., 1975) stand out in the 1, v diagram of OH/IR stars at the Galactic center. Are these stars just on the extreme edge of the radial velocity distribution? Or are these objects no longer bound to the Galactic center? We discuss these possibilities, showing that these are most likely bulge stars on elongated orbits passing close to the Galactic center.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1992
- Bibcode:
- 1992A&A...261L..17V
- Keywords:
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- Galactic Nuclei;
- Hydroxyl Emission;
- Infrared Stars;
- Milky Way Galaxy;
- Galactic Bulge;
- Radio Telescopes;
- Sky Surveys (Astronomy);
- Very Large Array (Vla);
- Astrophysics