Journal Article

The phase function for stellar acoustic oscillations — IV. Solar-like stars

F. Pérez Hernández and J. Christensen-Dalsgaard

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 295, issue 2, pages 344-352
Published in print April 1998 | ISSN: 0035-8711
Published online April 1998 | e-ISSN: 1365-2966 | DOI:
The phase function for stellar acoustic oscillations — IV. Solar-like stars

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In recent years there has been some progress towards detecting solar-like oscillations in stars. The goal of this challenging project is to analyse frequency spectra similar to that observed for the Sun in integrated light. In this context it is important to investigate what can be learned about the structure and evolution of the stars from such future observations. Here we concentrate on the structure of the upper layers, as reflected in the phase function. We show that it is possible to obtain this function from low-degree p modes, at least for stars on the main sequence. We analyse its dependence on several uncertainties in the structure of the uppermost layers. We also investigate a filtered phase function, which has properties that depend on the layers around the second helium ionization zone.

Keywords: Sun: interior; Sun: oscillations; stars: oscillations

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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