http://arxiv.org/abs/1408.2769
We recently showed that rotation significantly affects most observable Cepheid quantities, and that rotation, in combination with the evolutionary status of the star, can resolve the long-standing Cepheid mass discrepancy problem. We therefore provide a brief overview of our results regarding the problem of Cepheid masses. We also briefly mention the impact of rotation on the Cepheid period-luminosity(-color) relation, which is crucial for determining extragalactic distances, and thus for calibrating the Hubble constant.
R. Anderson, S. Ekstrom, C. Georgy, et. al.
Wed, 13 Aug 14
12/57
Comments: 2 pages, 1 figure, Proceedings of IAU Symposium 307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry
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