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The ACS survey of Galactic globular clusters: XII. Photometric binaries along the main sequence

Milone, Antonino; Piotto, G; Bedin, L R; Aparicio, A; Anderson, Jay; Sarajedini, A; Marino, Anna; Moretti, A; Davies, M B; Chaboyer, Brian; Dotter, Aaron; Hempel, Maren; Marin-Franch, A; Paust, Nathaniel; Reid, I Neill; Rosenberg, A


Context. The fraction of binary stars is an important ingredient to interpret globular cluster dynamical evolution and their stellar population. Aims. We investigate the properties of main-sequence binaries measured in a uniform photometric sample of 59 Galactic globular clusters that were observed by HST WFC/ACS as a part of the Globular Cluster Treasury project. Methods. We measured the fraction of binaries and the distribution of mass-ratio as a function of radial location within the...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201016384
Access Rights: Open Access


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