Data for Binary Stars from Gaia DR2

• Published in: Data Analytics and Management in Data Intensive Domains Vol. 1427; pp. 125 - 133
• Main Authors: Kovaleva, Dana, Malkov, Oleg, Sapozhnikov, Sergei, Chulkov, Dmitry, Skvortsov, Nikolay
• Format: Book Chapter
• Language: English
• Published: Switzerland Springer International Publishing AG 2021; Springer International Publishing
• Series: Communications in Computer and Information Science
• Subjects: Astronomical catalogues and databases; Binary stars; Gaia data
• ISBN: 9783030811990; 3030811999
• ISSN: 1865-0929; 1865-0937
• DOI: 10.1007/978-3-030-81200-3_9

Gaia space mission has provided a large amount of astrometric and photometric data for the Milky Way stellar population. Binary or multiple systems form a significant part of it. In spite of the fact that Gaia DR2 treats all stars as singles in respect to astrometric solutions, it still can be used to enrich our knowledge of the binary population in several ways. Many stars known to be components of binaries have received new astrometric measurements of validity to be discussed. Tens of thousands of prospective binaries were discovered by different authors as co-moving stars situated in space close to each other. We combine and analyze the new information for binaries from Gaia DR2, and include it into the Identification List of Binaries (ILB), a complete list of known binary and multiple stars.