The Beta CEP variables - Fundamental radial pulsators

Details The Beta CEP variables - Fundamental radial pulsators The Beta CEP variables - Fundamental radial pulsators

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204p..47s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Aug. 1983, p. 47P-51P. Research supported by the U

Astronomy and Astrophysics

Astronomy

10

B Stars, Cepheid Variables, Stellar Magnitude, Stellar Oscillations, Ubv Spectra, Calibrating, Radial Distribution, Star Clusters, Stellar Color, Stellar Luminosity

Scientific paper

New uvbyβ photometry for 61 B stars from B0-B9 in the young cluster NGC 3293 has shown that the commonly used calibration of the β index in terms of absolute magnitude, MV, gives MV values about 0.6 mag too bright for the early B stars in the cluster. Nine of the early B stars in NGC 3293 are β Cep variables with similar properties (periods, β and c0 indices) to the majority of the β Cep stars. Therefore, the MV scale for all the variables is deduced to be in error by ≡0.6 mag, since their absolute magnitudes are commonly derived from β. The application of this correction suggests that these stars pulsate in the fundamental radial mode instead of the first overtone as has been recently supposed.

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