Observational Constraints on Convective Core Overshoot

Details Observational Constraints on Convective Core Overshoot Observational Constraints on Convective Core Overshoot

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19712902k&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #129.02; Bulletin of the American Astronomical Society, Vol. 33, p.712

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a quantitative study of the degree of extension to the boundary of the classical convective core within massive stars. The basis of our empirical study is the observed stellar population of four young populous clusters in the Magellanic Clouds. The sample affords a meaningful comparison with theoretical scenarios with varying degrees of convective core overshoot and binary star fraction. Two critical properties of the population, the main-sequence luminosity function and the number of evolved stars, form the basis of our comparison between the observed data set and that simulated from the stellar evolutionary models. On the basis of this comparison we conclude that the case of no convective core overshoot is excluded at a 2 σ level.

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