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Possible substellar companions in low-mass eclipsing binaries: GU Boo and YY Gem

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU129178" target="_blank" >RIV/00216305:26110/18:PU129178 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1051/0004-6361/201833708" target="_blank" >https://doi.org/10.1051/0004-6361/201833708</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1051/0004-6361/201833708" target="_blank" >10.1051/0004-6361/201833708</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Possible substellar companions in low-mass eclipsing binaries: GU Boo and YY Gem

  • Original language description

    We present the next results of our long-term observational project to analyze the variations in the orbital periods of low-mass eclipsing binaries. About 70 new precise mid-eclipse times recorded with a CCD were obtained for two eclipsing binaries with short orbital periods. Observed-minus-calculated diagrams of the stars were analyzed using all reliable timings, and new parameters of the light-time effect were obtained. We derived for the first time or improved the short orbital periods of possible third bodies of 11 and 54 years for these low-mass binaries, respectively. We calculated that the minimum masses of the third components are close to 50 MJup, which corresponds to the mass of brown dwarfs. The multiplicity of these systems also plays an important role in the precise determination of their physical parameters.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2018

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    ASTRONOMY & ASTROPHYSICS

  • ISSN

    0004-6361

  • e-ISSN

    1432-0746

  • Volume of the periodical

    619

  • Issue of the periodical within the volume

    2018

  • Country of publishing house

    FR - FRANCE

  • Number of pages

    7

  • Pages from-to

    1-7

  • UT code for WoS article

    000452389400002

  • EID of the result in the Scopus database