Physical Parameters for RR Lyrae Stars in the SDSS Filter System
Solar and Stellar Astrophysics
2015-06-12 v1 Astrophysics of Galaxies
Abstract
We present a calibration of the metallicity and physical parameters (temperature, luminosity, gravity, mass, radius) for RR Lyrae stars using the ugriz SDSS photometric system. Our work is based on calculations of synthetic horizontal branches (HBs), fully taking into account evolutionary effects for a wide range in metallicities and HB morphologies. We provide analytical fits that are able to provide all quantities mentioned with very high (internal) precision, based solely on mean SDSS magnitudes and colors.
Keywords
Cite
@article{arxiv.1301.5626,
title = {Physical Parameters for RR Lyrae Stars in the SDSS Filter System},
author = {M. Catelan and G. I. Torrealba and C. Caceres and H. A. Smith and N. De Lee and M. Fitzgerald},
journal= {arXiv preprint arXiv:1301.5626},
year = {2015}
}
Comments
4 pages, contributed paper, proceedings IAU Symp. 289