Ref: ASTROimport-195

Fundamental parameters of Be stars located in the seismology fields of COROT

Frémat, Y. ; Neiner, C. ; Hubert, A.-M. ; Floquet, M. ; Zorec, J. ; Janot-Pacheco, E. ; Renan de Medeiros, J.

published in Astronomy and Astrophysics, 451, pp. 1053-1063 (2006)

Abstract: In preparation for the COROT space mission, we determined the fundamental parameters (spectral type, temperature, gravity, V sin i) of the Be stars observable by COROT in its seismology fields (64 Be stars). We applied a careful and detailed modeling of the stellar spectra, taking into account the veiling caused by the envelope, as well as the gravitational darkening and stellar flattening due to rapid rotation. Evolutionary tracks for fast rotators were used to derive stellar masses and ages. The derived parameters will be used to select Be stars as secondary targets (i.e. observed for 5 consecutive months) and short-run targets of the COROT mission. Furthermore, we note that the main part of our stellar sample falls in the second half of the main sequence life time, and that in most cases the luminosity class of Be stars is inaccurate in characterizing their evolutionary status.

DOI: 10.1051/0004-6361:20053305
Links: link

The record appears in these collections:
Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Peer Reviewed Articles

 Record created 2016-07-01, last modified 2016-07-01