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Convective Overshooting to Drive g-Modes in γ Dor Stars

Published online by Cambridge University Press:  13 May 2016

Y. Li
Y. Li*
Affiliation:
Yunnan Observatory, NAOCAS, P.O. Box 110, Kunming, 650011 China

Abstract

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From considerations of kinetic energy input from turbulent convection into g-mode pulsation, we show that g-mode pulsation may obtain enough energy from the turbulence to overcome damping in the stellar interior. The development of thick convective envelope in the stellar models requires a small value of the convection parameter α = 1.2 to ensure the low mass limit of the γ Dor stars' instability strip to be in agreement with the observations.

Type
Session I: Global Structure and Evolution of the Solar Interior
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 62 - 65
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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