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Rapid radial velocity variations in the Ap star HD 965

Published online by Cambridge University Press:  02 March 2005

V.G. Elkin
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, United Kingdom
D.W. Kurtz
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, United Kingdom
G. Mathys
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
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Abstract

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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 $15-20\,{\rm m\,s}^{-1}$.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2004 International Astronomical Union