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

SYSNO ASEP	0534335
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Statistical analysis of binary stars from the Gaia catalog data release 2
Author(s)	Závada, Petr (FZU-D)_{RID, ORCID} Píška, Karel (FZU-D)_{RID, ORCID}
Number of authors	2
Article number	33
Source Title	Astronomical Journal. - : Institute of Physics Publishing - ISSN 0004-6256 Roč. 159, č. 1 (2020), s. 1-15
Number of pages	15 s.
Language	eng - English
Country	US - United States
Keywords	star: binary ; binary: mass ; statistical ; statistical analysis ; dimension: 2 ; dimension: 3 ; orbit
Subject RIV	BE - Theoretical Physics
OECD category	Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
R&D Projects	LTT17018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000519136700001
EID SCOPUS	85106824612
DOI	10.3847/1538-3881/ab5865
Annotation	We 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.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0312556

Number of the records: 1