Rapid radial velocity variations in the Ap star HD 965
Abstract
We present the results of an investigation of the magnetic Ap star HD 965 with high spectral and time resolution. We determine exact radial velocities using spectra obtained with the UVES spectrograph on the ESO VLT. Special attention is given to the spectral lines of the Rare Earth Elements which in roAp stars exhibit the strongest radial velocity variations with pulsation period. Careful time series analysis did not detect any convincing evidence of pulsation in HD 965 with an upper limit in amplitude of 15-20 m s-1.
- Publication:
-
The A-Star Puzzle
- Pub Date:
- December 2004
- DOI:
- Bibcode:
- 2004IAUS..224..818E
- Keywords:
-
- Stars: chemically peculiar;
- stars: oscillations;
- stars: magnetic fields;
- stars: individual: (HD 965;
- 33 Lib)