NEAR-SURFACE EFFECTS IN MODELLING OSCILLATIONS OF ETA BOO
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.
Keywords
Cite
@article{arxiv.astro-ph/9503106,
title = {NEAR-SURFACE EFFECTS IN MODELLING OSCILLATIONS OF ETA BOO},
author = {J. Christensen-Dalsgaard and T. R. Bedding and G. Houdek and H. Kjeldsen and C. Rosenthal and R. Trampedach and M. J. P. F. G. Monteiro and A. Nordlund},
journal= {arXiv preprint arXiv:astro-ph/9503106},
year = {2007}
}
Comments
uuencoded and compressed Postscript (2 pages, including figure); To appear in Proceedings of IAU Colloquium 155, "Astrophysical Applications of Stellar Pulsation", Cape Town, South Africa