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Low-Mass Evolution from He Ignition to Beyond the Horizontal Branch

Published online by Cambridge University Press:  12 April 2016

Keith Despain
Keith Despain*
Affiliation:
Department of Astronomy, Haverford College, Haverford, PA 19041Theoretical Division, Los Alamos Scientific Laboratory, University of California, Los Alamos, NM 87545

Abstract

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The evolution of an 0.6 M⊙ stellar model during core helium burning is presented. Following the off-center ignition of helium in the “core” flash, the star remains on the red giant branch for > 106 years, undergoing twelve additional flashes. After leaving the giant branch, the star evolves on the horizontal branch for 8.15×107 years before returning to the giant branch and undergoing strong helium-shell flashes. The implications for horizontal branch and RR Lyrae stars are discussed.

Type
VII. RR Lyrae and BL Herculis Variables
Information
International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 483 - 489
Copyright
Copyright © Reidel 1980

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