Issue |
Astron. Astrophys. Suppl. Ser.
Volume 139, Number 3, November I 1999
|
|
---|---|---|
Page(s) | 433 - 460 | |
DOI | https://doi.org/10.1051/aas:1999401 | |
Published online | 15 November 1999 |
A catalog of rotational and radial velocities for evolved stars *,**
1
Departamento de Fisica, Universidade Federal do Rio Grande do Norte, Campus Universitario, 59072–970 Natal R.N., Brazil
2
Observatoire de Genève, CH–1290 Sauverny, Switzerland
Send offprint request to: J.R. de Medeiros
Received:
23
December
1998
Accepted:
27
May
1999
Rotational and radial velocities have been measured for about 2000 evolved
stars of luminosity classes IV, III, II and Ib covering the spectral region F,
G and K. The survey was carried out with the CORAVEL spectrometer. The
precision for the radial velocities is better than 0.30 km s-1,
whereas for the rotational velocity measurements the uncertainties are typically
1.0 km s-1 for subgiants and giants and 2.0 km s-1 for class II
giants and Ib supergiants. These data will add constraints to studies of the
rotational behaviour of evolved stars as well as solid informations concerning
the presence of external rotational brakes, tidal interactions in evolved
binary systems and on the link between rotation, chemical abundance and stellar
activity. In this paper we present the rotational velocity and the
mean radial velocity for the stars of luminosity classes IV, III and II.
Key words: stars: rotation; late-type; kinematics / techniques: radial velocities / catalogs
Based on observations collected at the Haute–Provence Observatory, Saint–Michel, France and at the European Southern Observatory, La Silla, Chile.
© European Southern Observatory (ESO), 1999