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Paper: RR Lyrae Variables in Binary Systems
Volume: 529, RR Lyrae/Cepheid 2019: Frontiers of Classical Pulsators
Page: 297
Authors: Hajdu, G.
Abstract: The direct mass measurement of RR Lyrae stars continues to be one of the most elusive tasks of astrophysics, despite the large amount of known members of this variable class. The number of promising RR Lyrae binary candidates have been increased greatly by studies taking advantage of the large-scale, long-term photometric and astrometric data that has become available. Nonetheless, it is paramount to confirm each candidate with adequate follow-up observations, as other effects can produce signals reminiscent of those expected from genuine RR Lyrae binary systems. Here we provide an overview of recent progress of this quickly developing field, along with some preliminary results for the confirmation of binarity for such systems.
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