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RR Lyrae stars in eclipsing systems -- historical candidates


LIŠKA Jiří SKARKA Marek HÁJKOVÁ Petra AUER Reinhold Friedrich

Druh Článek ve sborníku
Konference Open European Journal on Variable Stars, vol. 176. Proceedings of the 47th Conference on Variable Stars Research, vol. 176, held 27-29 November, 2015 in Ostrava
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Obor Astronomie a nebeská mechanika, astrofyzika
Klíčová slova RR Lyrae ; binary star ; candidate ; eclipsing binary
Popis Discovery of binary systems among RR Lyrae stars belongs to challenges of present astronomy. So far, none of classical RR Lyrae stars was clearly confirmed, that it is a part of an eclipsing system. From this reason we studied two RR Lyrae stars, VX Her and RW Ari, in which changes assigned to eclipses were detected in sixties and seventies of the 20th century. In this paper our preliminary results based on analysis of new photometric measurements are presented as well as the results from the detailed analysis of original measurements. A new possible eclipsing system, RZ Cet was identified in the archive data. Our analysis rather indicates errors in measurements and reductions of the old data than real changes for all three stars.
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