Appearance of Beta Cephei pulsations in the Be star 27 CMa

Details Appearance of Beta Cephei pulsations in the Be star 27 CMa Appearance of Beta Cephei pulsations in the Be star 27 CMa

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.251p..66b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 251, Aug. 1, 1991, p. 66P-68P.

Astronomy and Astrophysics

Astronomy

13

B Stars, Cepheid Variables, Stellar Oscillations, Light Curve, Stellar Rotation

Scientific paper

Intensive photometry is presented for the Be star 27 CMa for the 1990 and 1991 season. This shows the presence of a periodicity of 0.0918 d in addition to one of 1.257 d. The longer period is characteristic of a large fraction of Be stars and is already known from observations made in 1986 and 1987. However, the short-period pulsation is not seen in the early data. The star is unique for two reasons: it is the first time the growth of Beta Cep pulsations has been witnessed, and it is the only Be star which shows such pulsations.

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