The detection of small-amplitude variations in the extreme helium star LSS 3184
Open Access
- 15 July 1995
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 275 (2) , 327-330
- https://doi.org/10.1093/mnras/275.2.327
Abstract
A search for variability in the extreme helium star LSS 3184 shows at least one frequency (period ~ 0.107 d; semi-amplitude ~ 0.01 mag in B) and the first harmonic. This agrees with the prediction by Saio that the star should pulsate, unless very metal-weak, due to the classical kappa mechanism and the iron opacity bump near 2 × 105 K.Keywords
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