J/other/Sci/337.444 RV curves of Galactic massive O stars (Sana+, 2012)
Binary interaction dominate the evolution of massive stars.
Sana H., de Mink S.E., de Koter A., Langer N., Evans C.J., Gieles M.,
Gosset E., Izzard R.G., Le Bouquin J.-B., Schneider F.R.N.
<Sciences, 337, 444 (2012)>
=2012Sci...337..444S 2012Sci...337..444S
ADC_Keywords: Clusters, open ; Stars, O ; Radial velocities
Keywords: stars, early-type - binaries, spectroscopic - clusters, open -
radial velocities
Abstract:
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. Over seventy per cent 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.
Description:
Journal of (existing and new) observations and radial velocity (RV)
database of the O-type stars in six young open clusters : IC 1805,
IC 1848, IC 2944, NGC 6231, NGC 6611 and Trumpler 16.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 36 71 List of studied stars
journal.dat 74 1856 Journal of the observations and RV measurements
refs.dat 199 22 Detailled references
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Cluster Name of cluster
9- 20 A12 --- Object O-star name
22- 24 I3 --- Nobs Number of observations
26- 36 A11 --- SName Simbad name
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Byte-by-byte Description of file: journal.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Object O-star name
14- 26 F13.5 d HJD Heliocentric Julian Date
28- 34 F7.2 km/s RV Radial velocity
36- 74 A39 --- Ref CDS bibliographic code(s)
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- BibCode BibCode
21- 43 A23 --- Aut Author's name
46-199 A154 --- Ref Reference year and title
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Acknowledgements:
Hugues Sana, h.sana(at)uva.nl
(End) Hugues Sana [Univ. of Amsterdam], Patricia Vannier [CDS] 12-Jun-2012