On the amplitude decrease of the beta Cephei stars SPICA and 16 Lacertae

Details On the amplitude decrease of the beta Cephei stars SPICA and 16 Lacertae On the amplitude decrease of the beta Cephei stars SPICA and 16 Lacertae

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217p..17b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Nov. 15, 1985, p. 17P-21P.

Astronomy and Astrophysics

Astronomy

13

Eclipsing Binary Stars, Stellar Oscillations, Variable Stars, Amplitude Distribution Analysis, Precession, Radial Velocity, Stellar Rotation

Scientific paper

The changes seen in the pulsation amplitudes of Spica and 16 Lacertae may be a consequence of their membership of binary systems. The author suggests that precession of the rotational axis about the orbital axis presents different angles of inclination of the pulsational axis to the observer. As a result the observed light and radial velocity pulsational amplitudes could be expected to vary if the oscillations are non-radial.

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