Physical parameters of seven field RR Lyrae Stars in Bootes
Solar and Stellar Astrophysics
2009-07-28 v1
Abstract
Str\"omgren uvby-beta photometry is reported for the RR Lyrae stars AE, RS, ST, TV, TW, UU, and XX in Bootes. The physical parameters M/Mo, log (L/Lo), M_V, log T_eff and [Fe/H], have been estimated from the Fourier decomposition of the light curves and the empirical calibrations developed for this type of stars. Detailed behavior of the stars along the cycle of pulsation has been determined from the observed photometric indices and the synthetic indices from atmospheric models. The reddening of the zone is found to be negligible, as estimated from the reddening of several objects in the same region of the sky. Hence the distances to the individual objects are also estimated.
Keywords
Cite
@article{arxiv.0907.4711,
title = {Physical parameters of seven field RR Lyrae Stars in Bootes},
author = {J. H. Peña and A. Arellano Ferro and R. Peña Miller and J. P. Sareyan and M. Alvarez},
journal= {arXiv preprint arXiv:0907.4711},
year = {2009}
}
Comments
1 latex and 5 figures in eps