Original title: Z CVn - Still mysterious
Authors: Skarka, Marek ; Liška, J. ; Dřevěný, R. ; Sódor, A. ; Kolenberg, B.
Document type: Papers
Conference/Event: Conference on Variable Stars Research /49./, Brno (CZ), 20171103
Year: 2018
Language: eng
Abstract: We comment on short- and long-term pulsation period variations of Z CVn, a classical RR Lyrae star with the Blazhko effect. Z CVn shows cyclic-like O-C diagram that can be interpreted as a consequence of binarity throught the light travel time effect. We show that this hypothesis is false and that the observed long-term period variations must be caused by some effect that is intrinsic to the star. We also show that the Blazhko period is not simply anti-correlated with the long-term period variations as was suggested by previous authors.
Keywords: Blazhko effect; long-term pulsation; short-term pulsation
Project no.: GC17-01752J (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of the 49th Conference on Variable Stars Research, ISSN 1801-5964

Institution: Astronomical Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0292675

Permalink: http://www.nusl.cz/ntk/nusl-391565


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