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25 April 2024

» arxiv » astro-ph/9503106

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NEAR-SURFACE EFFECTS IN MODELLING OSCILLATIONS OF ETA BOO
J. Christensen-Dalsgaard ; T.R. Bedding ; G. Houdek ; H. Kjeldsen ; C. Rosenthal ; R. Trampedach ; M.J.P.F.G. Monteiro & A. Nordlund ;
Date:	29 Mar 1995
Subject:	astro-ph
Abstract:	Following the report of solar-like oscillations in the G0 V star eta Boo (Kjeldsen et al. 1995, AJ 109, 1313), a first attempt to model the observed frequencies was made by Christensen-Dalsgaard et al. (1995, ApJ Letters, in press). This attempt succeeded in reproducing the observed frequency separations, although there remained a difference of about 10 microHz between observed and computed frequencies. In those models, the near-surface region of the star was treated rather crudely. Here we consider more sophisticated models that include non-local mixing-length theory, turbulent pressure and nonadiabatic oscillations.
Source:	arXiv, astro-ph/9503106
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