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Excitation of P-Modes in the Sun and Stars

Published online by Cambridge University Press:  30 March 2016

Robert Stein ,
Dali Georgobiani ,
Regner Trampedach ,
Hans-Günter Ludwig  and
Åke Nordlund
Robert Stein
Affiliation:
Michigan State University, East Lansing, MI 48824, USA
Dali Georgobiani
Affiliation:
Michigan State University, East Lansing, MI 48824, USA
Regner Trampedach
Affiliation:
Michigan State University, East Lansing, MI 48824, USA
Hans-Günter Ludwig
Affiliation:
Lund Observatory, Box 43, 22100 Lund, Sweden
Åke Nordlund
Affiliation:
Astronomical Observatory / NBIfAFG, Juliane Maries Vej 30, Dk-2100 Copenhagen Ø, Denmark

Abstract

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P-mode oscillations in the Sun and stars are excited stochasticly by Reynolds stress and entropy fluctuations produced by convection in their outer envelopes. The excitation increases with increasing effective temperature (until envelope convection ceases in the F stars) and also increases with decreasing gravity.

Type
I. Joint Discussions
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 411 - 414
Copyright
Copyright © Astronomical Society of Pacific 2005

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