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Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10391419" target="_blank" >RIV/00216208:11320/18:10391419 - isvavai.cz</a>

  • Alternative codes found

    RIV/67985815:_____/18:00500557 RIV/00098639:_____/18:N0000002

  • 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 Bootis and YY Geminorum

  • 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: GU Boo (P = 0.(d)49) and YY Gem (0.(d)81). 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 M-Jup, 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

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

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

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 &amp; Astrophysics [online]

  • ISSN

    1432-0746

  • e-ISSN

  • Volume of the periodical

    620

  • Issue of the periodical within the volume

    listopad

  • Country of publishing house

    FR - FRANCE

  • Number of pages

    7

  • Pages from-to

  • UT code for WoS article

    000452389400002

  • EID of the result in the Scopus database

    2-s2.0-85058064404