Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74...30s&link_type=abstract
Astronomy and Astrophysics, vol. 74, no. 1, Apr. 1979, p. 30-37. Research supported by the University of Nebraska and Universit
Astronomy and Astrophysics
Astrophysics
21
Cepheid Variables, Dwarf Stars, Light Curve, Astronomical Models, Radial Velocity
Scientific paper
Least-squares Fourier-interaction fits are made to the observed light variations and radial-velocity variations of AI Velorum. The first-order amplitudes and phases emerging from these fits are then compared with the corresponsing quantities from linear nonadiabatic pulsation models in an attempt to determine the mass of AI Vel. The mass thus obtained is low (about 0.25 to 0.45 solar mass), 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.
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