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Multiperiodicity in the large-amplitude rapidly-rotating $\beta\,$Cephei star HD 203664
2006
Astronomy and Astrophysics
We perform a seismic study of the young massive β Cephei star HD 203664 with the goal to constrain its interior structure. Our study is based on a time series of 328 new Geneva 7-colour photometric data of the star spread over 496.8 days. The data confirm the frequency of the dominant mode of the star which we refine to f_1=6.02885 c d^-1. The mode has a large amplitude of 37 mmag in V and is unambiguously identified as a dipole mode (ℓ=2) from its amplitude ratios and non-adiabatic
doi:10.1051/0004-6361:20054142
fatcat:fsmiovf4crftxmopddr45t2lmm