Department of Physics and Astronomy: Publications and Other Research
Date of this Version
5-16-1978
Document Type
Article
Citation
Astron. Astrophys. 74, 30-37 (1979)
Abstract
Least-squares Fourier-Interaction fits are made to the observed light variations (Walraven, 1955) and radial velocity variations (Gratton and Lavagnino, 1953) of AI Velorum. The first-order amplitudes and phases emerging from these fits are then compared with the corresponding quantities from linear nonadiabatic pulsation models to attempt to determine the mass of AI Vel. The mass thus obtained is low (~0.25 to 0.45 M ʘ), but due to uncertainties in the method, this result is not considered definitive. The various uncertainties are analyzed in some detail and it is concluded that a new set of observed radial velocities will be needed in order to distinguish among different theoretical models for the oscillations of AI Vel.
Comments
Copyright 1979 European Southern Observatory