Bump Cepheids and the Stellar Mass-Luminosity Relation

Details Bump Cepheids and the Stellar Mass-Luminosity Relation Bump Cepheids and the Stellar Mass-Luminosity Relation

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19913709k&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #137.09; Bulletin of the American Astronomical Society, Vol. 33, p.1513

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of nonlinear pulsation modeling of a sample of bump Cepheids from the Magellanic Clouds. Photometry is taken from the Macho database. In fitting the observed lightcurve it is possible to detach the mass, luminosity and Teff for each Cepheid. We use these results to describe the observed mass-luminosity relationship for stars of mass 4-10Mo. This reveals the necessity for a larger degree of internal mixing whilst on the main-sequence than is currently implemented in stellar evolutionary models.

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