2011/09/21 by Hilding Neilson, Norbert Langer, Neilson, Hilding +3
Physics and Astronomy · #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR
paper · pdf · doi:10.48550/arxiv.1109.4563
6 pages, 3 figures, To appear in the proceedings of "The 9th Pacific Rim Conference on Stellar Astrophysics", (Lijiang, China, April, 2011), ASPC
arxiv created 2011/09/21 · arxiv updated 2011/09/22
The Cepheid mass discrepancy, the difference between mass estimates from stellar pulsation and stellar evolution models, is a long standing challenge for the understanding of stellar astrophysics. We discuss the current state of the mass discrepancy and test the role of pulsation-driven mass loss in state-of-the-art stellar evolution calculations of Large Magellanic Cepheids in resolving it. We find that Cepheid mass loss is a significant contributor to the mass discrepancy, but it is not clear if the metallicity dependence of Cepheid mass loss is consistent with the measured metallicity dependence of the mass discrepancy.