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Statistical analysis of binary stars from the Gaia catalog data release 2

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    SYSNO ASEP0534335
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevStatistical analysis of binary stars from the Gaia catalog data release 2
    Tvůrce(i) Závada, Petr (FZU-D) RID, ORCID
    Píška, Karel (FZU-D) RID, ORCID
    Celkový počet autorů2
    Číslo článku33
    Zdroj.dok.Astronomical Journal - ISSN 0004-6256
    Roč. 159, č. 1 (2020), s. 1-15
    Poč.str.15 s.
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovastar: binary ; binary: mass ; statistical ; statistical analysis ; dimension: 2 ; dimension: 3 ; orbit
    Vědní obor RIVBE - Teoretická fyzika
    Obor OECDAtomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
    Způsob publikováníOpen access
    Institucionální podporaFZU-D - RVO:68378271
    UT WOS000519136700001
    DOI10.3847/1538-3881/ab5865
    AnotaceWe have developed a general statistical procedure for analysis of 2D and 3D finite patterns, which is applied to the data from recently released Gaia-ESA catalog DR2. The 2D analysis clearly confirms our former results on the presence of binaries in the former DR1 catalog. Our main objective is the statistical 3D analysis of DR2. For this, it is essential that the DR2 catalog includes parallaxes and data on the proper motion. The analysis allows us to determine for each pair of stars the probability that it is the binary star. This probability is represented by the function depending on the separation. Furthermore, a combined analysis of the separation with proper motion provides a clear picture of binaries with two components of the motion: parallel and orbital. The result of this analysis is an estimate of the average orbital period and mass of the binary system. The catalog we have created involves 80,560 binary candidates.
    PracovištěFyzikální ústav
    KontaktKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Rok sběru2021
    Elektronická adresahttp://hdl.handle.net/11104/0312556
Počet záznamů: 1