Evolutionary changes in the periods of galactic RRab stars
Solar and Stellar Astrophysics
2012-02-17 v1
Abstract
Le Borgne et al. (2007) report on the determination of evolutionary changes in the periods of field RR Lyr stars. Thanks to the extension of the GEOS database, we could analyze a sample twice larger than the previous one. We obtained a different picture of the period changes, with a number of stars showing an increasing period greater than that of stars showing a decreasing period.
Keywords
Cite
@article{arxiv.1202.3546,
title = {Evolutionary changes in the periods of galactic RRab stars},
author = {Jacqueline Vandenbroere and Ennio Poretti and Jean-Francois Le Borgne},
journal= {arXiv preprint arXiv:1202.3546},
year = {2012}
}
Comments
Proceedings of the 20th Stellar Pulsation Conference Series: "Impact of new instrumentation & new insights in stellar pulsations", 5-9 September 2011, Granada, Spain