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On the Interpretation of the Long-Term Cyclic Period Variations in RR Lyrae Stars

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU139981" target="_blank" >RIV/00216305:26620/17:PU139981 - isvavai.cz</a>

  • Alternative codes found

    RIV/67985815:_____/18:00499851

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    On the Interpretation of the Long-Term Cyclic Period Variations in RR Lyrae Stars

  • Original language description

    Many RR Lyrae stars show long-term variations of their pulsation period, some of them in a cyclic way. Such behaviour can be attributed to the light-travel time effect (LTTE) caused by an unseen companion. Solutions of the LTTE often suggest very eccentric orbits and minimal mass of the companion on the order of several solar masses, thus, in the black hole range. We discuss the possibility of the occurrence of the RR Lyrae-black hole pairs, and on the case of Z CVn, demonstrate that the LTTE hypothesis can be false in some of the binary candidates.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

    <a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    RR LYRAE 2017 CONFERENCE - REVIVAL OF THE CLASSICAL PULSATORS: FROM GALACTIC STRUCTURE TO STELLAR INTERIOR DIAGNOSTICS

  • ISBN

    978-8-3938-2799-2

  • ISSN

  • e-ISSN

  • Number of pages

    5

  • Pages from-to

    243-247

  • Publisher name

    Neuveden

  • Place of publication

    Neuveden

  • Event location

    Niepolomice

  • Event date

    Sep 17, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article

    000540757500037