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Evolutionary changes in the periods of galactic RRab stars

2012/02/16 by Jacqueline Vandenbroere, Vandenbroere, Jacqueline, E. Poretti +5
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies #astro-ph.SR

paper · pdf · doi:10.48550/arxiv.1202.3546

Proceedings of the 20th Stellar Pulsation Conference Series: "Impact of new instrumentation & new insights in stellar pulsations", 5-9 September 2011, Granada, Spain

arxiv created 2012/02/16 · openalex publication_date 2012/02/16 · arxiv updated 2012/02/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

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