Detalles de publicación

PP 05040

A seismological analysis of Delta Scuti stars in the Pleiades cluster

L. Fox Machado(1), F. Pérez Hernández(2), J.C. Suárez(3), E. Michel(4), Y. Lebreton(5)
(1) Instituto de Astrofísica de Canarias, Spain, (2) Departamento de Astrofísica ULL, Spain, (3) Instituto de Astrofísica de Andalucía, Spain, (4) Observatoire de Paris, LESIA, France, (5) Observatoire de Paris, GEPI, France
A comparison between the oscillation frequencies of six multi-periodic Delta Scuti stars of the Pleiades cluster and the eigenfrequencies of rotating stellar models that match the corresponding stellar parameters has been carried out. The assumption that all the stars considered have some common parameters, such as metallicity, distance or age, is imposed as a constraint. As a result, we have a best fit solution associated with a cluster metallicity of [Fe/H]~0.067, an age between 70x106 and 100x106 yr and a distance modulus of mv-Mv=5.60-5.70 mag. All the stars were found to oscillate mainly on non-radial, low degree, low orders p modes. Estimates of mass and rotation rate for each star is also obtained.

 
Aceptado para publicación en A&A | Enviado el 2005-10-19 | Proyecto