Mode identification of Beta Cephei stars in NGC 3293

Details Mode identification of Beta Cephei stars in NGC 3293 Mode identification of Beta Cephei stars in NGC 3293

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..189e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Nov. 1, 1986, p. 189-206.

Astronomy and Astrophysics

Astronomy

19

Cepheid Variables, Stellar Oscillations, Light Curve, Stellar Mass, Stellar Rotation

Scientific paper

The results of a periodogram analysis of intensive observations of β Cephei stars in NGC 3293 are presented. All stars are multiperiodic, some showing five periods. Masses, radii and temperatures are calculated and used to compare observed frequencies with theoretical eigenfrequencies for certain non-radial pulsation modes. Higher overtones may be associated with higher masses. Closely spaced frequencies are fitted to a model of second-order rotational splitting of non-radial modes and a range of possible mode identifications is found. First overtone pulsation is dominant, followed by second overtone pulsation. A roughly equal distribution of radial, dipole and quadrupole modes appears in these stars.

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