Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-24T03:58:17.783Z Has data issue: false hasContentIssue false
  • English
  • Français

Rotation and the Cepheid Mass Discrepancy

Published online by Cambridge University Press:  23 January 2015

Richard I. Anderson ,
Sylvia Ekström ,
Cyril Georgy ,
Georges Meynet ,
Nami Mowlavi  and
Laurent Eyer
Richard I. Anderson
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland email: [email protected]
Sylvia Ekström
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland email: [email protected]
Cyril Georgy
Affiliation:
Astrophysics group, Lennard-Jones Laboratories, EPSAM, Keele University, Staffordshire, ST5 5BG, UK
Georges Meynet
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland email: [email protected]
Nami Mowlavi
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland email: [email protected]
Laurent Eyer
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

stars: evolutionstars: rotationsupergiantsCepheidsdistance scale
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 206 - 207
Copyright
Copyright © International Astronomical Union 2015 

References

Anderson, R. I., Ekström, S., Georgy, C., et al. 2014, A&A 564, A100Google Scholar
Bono, G., Caputo, F., & Castellani, V. 2006, MemSAIt 77, 207Google Scholar
Christy, R. F. 1968, QJRAS 9, 13Google Scholar
Ekström, S., Georgy, C., Eggenberger, P., et al. 2012, A&A 537, A146Google Scholar
Georgy, C., Ekström, S., Granada, A., et al. 2013, A&A 553, A24Google Scholar
Neilson, H. R. & Lester, J. B. 2008, ApJ 684, 569Google Scholar
Prada Moroni, P. G., Gennaro, M., Bono, G., et al. 2012, ApJ 749, 108CrossRefGoogle Scholar
Ritter, A. 1879, Wiedemanns Annalen VIII, 173Google Scholar
Stobie, R. S. 1969a, MNRAS 144, 461CrossRefGoogle Scholar
Stobie, R. S. 1969b, MNRAS 144, 485Google Scholar
Stobie, R. S. 1969c, MNRAS 144, 511Google Scholar