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Helio- and asteroseismology

Published online by Cambridge University Press:  01 April 2008

Jørgen Christensen-Dalsgaard
Jørgen Christensen-Dalsgaard*
Affiliation:
Danish AsteroSeismology Centre, and Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark email: jcd@phys.au.dk
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Abstract

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Observations of solar and stellar oscillations are providing detailed information about stellar interiors. In the case of the Sun the set of observed frequencies is sufficiently detailed and accurate that the properties of the solar interior, such as sound speed, density and internal rotation, can be inferred with substantial precision and resolution. This allows detailed tests of solar modelling, with interesting and to some extent controversial results. Observations of solar-like oscillations in distant stars have started only recently, owing their very small amplitudes. However, developments in ground-based equipment and observations from space are revolutionizing this field, promising greatly increased insight into the structure and evolution of the stars.

Keywords

Sun: helioseismology – Sun: abundances – stars: oscillations – stars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 135 - 147
Copyright
Copyright © International Astronomical Union 2008

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