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| Content Provider | Springer Nature Link |
|---|---|
| Author | Griffin, R. F. Stroe, A. |
| Copyright Year | 2012 |
| Abstract | The ‘Redman K stars’ are a group of 80-odd seventh-magnitude late-type stars, nearly all giants, distributed along the Galactic equator between approximate longitudes 50° and 150° (roughly Sagitta to Cassiopeia). Their radial velocities have been measured systematically once per season in 30 of the 45 seasons from 1966 to 2010/11. At least 26 of them (30%) have proved to vary in velocity. Orbits have been derived for all but one of the 26, many of them having longer periods than have normally been associated with spectroscopic binaries; several are comparable with, or longer than, the present duration of the observing campaign. Also reported here are radial-velocity measurements made casually of stars seen in the fields of some of the Redman stars. Two of the companions have proved to vary in velocity on long time-scales, and (somewhat preliminary) orbits are given for them. |
| Starting Page | 245 |
| Ending Page | 278 |
| Page Count | 34 |
| File Format | |
| ISSN | 02506335 |
| Journal | Journal of Astrophysics and Astronomy |
| Volume Number | 33 |
| Issue Number | 2 |
| e-ISSN | 09737758 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2012-07-26 |
| Publisher Institution | Indian Academy of Sciences |
| Publisher Place | India |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Stars: late-type stars: radial velocities spectroscopic binaries orbits Astrophysics and Astroparticles Astronomy, Observations and Techniques |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
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