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Z CVn - Still mysterious
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SYSNO ASEP 0500547 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Z CVn - Still mysterious Author(s) Skarka, Marek (ASU-R) ORCID
Liška, J. (CZ)
Dřevěný, R. (CZ)
Sódor, A. (HU)
Kolenberg, B. (BE)Source Title Open European Journal on Variable stars. - : Sekce pozorovatelů proměnných hvězd České astronomické společnosti - ISSN 1801-5964
Roč. 187, March (2018), s. 32-34Number of pages 3 s. Action Conference on Variable Stars Research /49./ Event date 03.11.2017 - 05.11.2017 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords long-term pulsation ; short-term pulsation ; Blazhko effect Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) R&D Projects GC17-01752J GA ČR - Czech Science Foundation (CSF) Institutional support ASU-R - RVO:67985815 Annotation 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. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2019
Number of the records: 1