Resolving the Cepheid Mass Discrepancy with Pulsation-Driven Mass Loss

Details Resolving the Cepheid Mass Discrepancy with Pulsation-Driven Mass Loss Resolving the Cepheid Mass Discrepancy with Pulsation-Driven Mass Loss

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812105n&link_type=abstract

American Astronomical Society, AAS Meeting #218, #121.05; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The Cepheid Mass Discrepancy is the difference between mass predictions using stellar evolution and stellar pulsation calculations. Currently, masses from stellar pulsation are typically 10-20% smaller than those from evolution models. This problem is a challenge for the understanding of stellar evolution and pulsation. One potential solution is enhanced mass loss during the Cepheid stage of evolution. We use state-of-the-art stellar evolution models and find that the combination of moderate convective core overshooting and pulsation-driven mass loss resolves the Cepheid Mass Discrepancy.

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