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arXiv · 1408.2769

Rotation and the Cepheid Mass Discrepancy

Richard I. Anderson·Sylvia Ekström·Cyril Georgy·Georges Meynet·Nami Mowlavi·Laurent Eyer
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Abstract

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.

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Richard I. Anderson, Sylvia Ekström, Cyril Georgy, Georges Meynet, Nami Mowlavi, Laurent Eyer. 2014-08-12. Rotation and the Cepheid Mass Discrepancy. https://doi.org/10.1017/s1743921314006723

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