[en] The presence of a nearby companion alters the evolution of massive stars in binary systems, leading to phenomena such as stellar mergers, x-ray binaries, and gamma-ray bursts. Unambiguous constraints on the fraction of massive stars affected by binary interaction were lacking. We simultaneously measured all relevant binary characteristics in a sample of Galactic massive O stars and quantified the frequency and nature of binary interactions. More than 70% of all massive stars will exchange mass with a companion, leading to a binary merger in one-third of the cases. These numbers greatly exceed previous estimates and imply that binary interaction dominates the evolution of massive stars, with implications for populations of massive stars and their supernovae.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Sana, H.; Astronomical Institute Anton Pannekoek, Amsterdam University, Science Park 904, 1098 XH, Amsterdam, Netherlands
de Mink, S. E.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA. ; Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
de Koter, A.; Astronomical Institute Anton Pannekoek, Amsterdam University, Science Park 904, 1098 XH, Amsterdam, Netherlands. ; Astronomical Institute, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, Netherlands
Langer, N.; Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Evans, C. J.; UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
Gieles, M.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
Gosset, Eric ; Université de Liège - ULiège > GAPHE : Astrophysique observationnelle (sol et espace)
Izzard, R. G.; Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Le Bouquin, J.-B.; Université Joseph Fourier–Grenoble 1/CNRS–Institut National des Sciences de l’Univers, Institut de Planétologie et d’Astrophysique de Grenoble UMR 5274, Grenoble, France
Schneider, F. R. N.; Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany)
Language :
English
Title :
Binary Interaction Dominates the Evolution of Massive Stars
Publication date :
01 July 2012
Journal title :
Science
ISSN :
0036-8075
eISSN :
1095-9203
Publisher :
American Association for the Advancement of Science, Washington, United States - District of Columbia
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