A study of double- and multi-mode RR Lyrae variables

Autor:	Khruslov, A. V.
Rok vydání:	2016
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Zdroj:	Baltic Astronomy, vol. 24, 379-386, 2015
Druh dokumentu:	Working Paper
DOI:	10.1515/astro-2017-0239
Popis:	We present the results of our new study of known RR Lyrae variable stars. All observations available for these stars in the Catalina Surveys were analyzed, and double-mode variations were identified. We studied the Petersen diagram and period distribution for the double-mode RR Lyrae variables in the Galactic field, pulsating in the first-overtone and fundamental modes. The double-peaked character of the period distribution was detected for Galactic RR(B) stars, corresponding to Oosterhoff's classes of globular clusters, which indicates that the age and evolution stage of RR(B) stars in the field and RR Lyrae variables in globular clusters are probably the same. Besides, we discovered five RRC stars with two simultaneously excited non-radial pulsations (equidistant triplets). Comment: 10 pages, 5 figures, 2 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1602.06168 Zobrazit plný text záznamu View this record from Arxiv