Convective shells and the core He-burning phase of massive stars |
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| Authors: | C Chiosi E Nasi |
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| Institution: | (1) Istituto di Astronomia dell' Università Padova, Italy;(2) Osservatorio Astronomico, Padova, Italy;(3) Istituto di Astronomia dell'Università Bologna, Italy |
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| Abstract: | In this paper we briefly discuss the effect of complete homogenization in the intermediate unstable layers of massive stars on the effective temperature of the core He-burning models. To this end, a 20M
 star of Population I chemical composition (X=0.700,Z=0.020) has been allowed to evolve from the Main Sequence into the core He-exhaustion stage without taking into account semiconvective mixing. The results show that the models are systematically bluer than those computed with the same physical parameters but with the inclusion of semiconvection. |
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