Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101779
Title: Unresolved Binaries and Galactic Clusters' Mass Estimates
Authors: Borodina, O. I.
Seleznev, A. F.
Carraro, G.
Danilov, V. M.
Issue Date: 2019
Publisher: Institute of Physics Publishing
Citation: Unresolved Binaries and Galactic Clusters' Mass Estimates / O. I. Borodina, A. F. Seleznev, G. Carraro, et al. — DOI 10.3847/1538-4357/ab08e5 // Astrophysical Journal. — 2019. — Vol. 874. — Iss. 2. — 127.
Abstract: Binary stars are present in all stellar systems, yet their role is far from being fully understood. We investigate the effect of unresolved binaries in the derivation of open clusters' mass by star counts. We start from the luminosity functions of five open clusters: IC 2714, NGC 1912, NGC 2099, NGC 6834, and NGC 7142. Luminosity functions are obtained via star counts extracted from the 2MASS database. The fraction of binaries is considered to be independent of stellar magnitude. We take into account different assumptions for the binary mass ratio distribution and assign binary masses using the so-called luminosity-limited pairing method and Monte-Carlo simulations. We show that cluster masses increase when binary stars are appropriately taken into account. © 2019. The American Astronomical Society. All rights reserved..
Keywords: BINARIES: GENERAL
OPEN CLUSTERS AND ASSOCIATIONS: GENERAL
STARS: LUMINOSITY FUNCTION, MASS FUNCTION
URI: http://hdl.handle.net/10995/101779
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85064454144
PURE ID: 9312543
9f0870e8-e987-4b4b-8d35-b29386cf4983
ISSN: 0004637X
DOI: 10.3847/1538-4357/ab08e5
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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