Catalog of wide binary, trinary and quaternary candidates from the Gaia data release 2 (Region |b| > 25°)

0566747 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Závada, Petr - Píška, Karel
Catalog of wide binary, trinary and quaternary candidates from the Gaia data release 2 (Region |b| > 25°).
Astronomical Journal. Roč. 163, č. 1 (2022), č. článku 33. ISSN 0004-6256. E-ISSN 1538-3881
Grant CEP: GA MŠMT(CZ) LTT17018
Institucionální podpora: RVO:68378271
Klíčová slova: Gaia-ESA * 2D patterns * galactic latitude
Obor OECD: Particles and field physics
Impakt faktor: 5.3, rok: 2022
Způsob publikování: Open access

The occurrence of multiple stars, dominantly binaries, is studied using the Gaia-ESA DR2 catalog. We apply the optimized statistical method that we previously developed for the analysis of 2D patterns. The field of stars is divided into a mosaic of small pieces that represent a statistical set for analysis. Specifically, data input is represented by a grid of circles (events) with radius 0.°02 covering the sky in the field of galactic latitude ∣b∣ > 25°. The criteria for selecting candidates for multiple stars are based on two parameters: angular separation and collinearity of proper motion. Radial separation, due to limited accuracy, is used only as a weaker supplementary constraint. Due attention is paid to the accurate calculation of the background, which is a necessary input for evaluating the quality of the candidates.
Trvalý link: https://hdl.handle.net/11104/0338037