β Cephei and SPB stars in the Large Magellanic Cloud
- 1 January 2004
- journal article
- Published by Cambridge University Press (CUP) in International Astronomical Union Colloquium
- Vol. 193, 225-229
- https://doi.org/10.1017/s0252921100010666
Abstract
This is a progress report of the study of pulsating main-sequence stars in the LMC. Using the OGLE-II photometry supplemented by the MACHO photometry, we find 64 β Cephei stars in the LMC. Their periods are generally much longer than observed in stars of this type in the Galaxy (the median value is 0.27 d compared with 0.17 d in the Galaxy). In 20 stars with short periods attributable to the β Cephei-type instability, we also find modes with periods longer than ~0.4d. They are likely low-order g modes, which means that in these stars both kinds of variability, β Cephei and SPB, are observed. We also show examples of the multiperiodic SPB stars in the LMC, the first beyond our Galaxy.Keywords
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This publication has 1 reference indexed in Scilit:
- Early-type variables in the Magellanic CloudsAstronomy & Astrophysics, 2002