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Effects of envelope overshoot on the bump of the Red Giant Branch luminosity function

Published online by Cambridge University Press:  19 July 2016

M. Alongi ,
G. Bertelli ,
A. Bressan  and
C. Chiosi
M. Alongi
Affiliation:
Department of Astronomy, University of Padova
G. Bertelli
Affiliation:
Department of Astronomy, University of Padova National Council of Research (CNR-GNA)
A. Bressan
Affiliation:
Astronomical Observatory of Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
C. Chiosi
Affiliation:
Department of Astronomy, University of Padova

Abstract

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We show that a certain amount of non-local overshoot at the base of the outer convective envelop of low mass stars, while climbing along the RGB toward central He-ignition, explains the shift of about 0.4V mag required to bring the luminosity of the bump predicted in the theoretical RGB luminosity functions into agreement with the observational one.

Type
Stellar Evolution
Information
Symposium - International Astronomical Union , Volume 148: The Magellanic Clouds , 1991 , pp. 325 - 326
Copyright
Copyright © Kluwer 1991 

References

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