The VLT-FLAMES Tarantula Survey XXII. Multiplicity properties of the B-type stars
作者： P. R. Dunstall , P. L. Dufton , H. Sana , C. J. Evans , I. D. Howarth
DOI: 10.1051/0004-6361/201526192
关键词: Binary number 、 Astronomy 、 Physics 、 Amplitude 、 Astrophysics 、 Large Magellanic Cloud 、 Stars 、 Helium 、 Multiplicity (chemistry) 、 O-type star 、 Spectroscopy
摘要: We investigate the multiplicity properties of 408 B-type stars observed in 30 Doradus region Large Magellanic Cloud with multi-epoch spectroscopy from VLT-FLAMES Tarantula Survey (VFTS). use a cross-correlation method to estimate relative radial velocities helium and metal absorption lines for each our targets. Objects significant radial-velocity variations (and an amplitude larger than 16 km s-1) are classified as spectroscopic binaries. find binary fraction (defined by periods 0.1) stars, fB(obs) = 0.25 ± 0.02, which appears constant across field view, except two older clusters (Hodge 301 SL 639). These have significantly lower fractions 0.08 ± 0.08 0.10 ± 0.09, respectively. Using synthetic populations model epochs their potential biases, we constrain intrinsic dwarf giant (i.e. relatively unevolved) Dor. obtain present-day fB(true) = 0.58 ± 0.11, flat period distribution. Within uncertainties, agree those O Dor VFTS.
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C. Martayan, Y. Frémat, A.-M. Hubert, M. Floquet, J. Zorec, C. Neiner, Effects of metallicity, star-formation conditions, and evolution in B and Be
stars Astronomy & Astrophysics. ,vol. 452, pp. 273- 284 ,(2006) , 10.1051/0004-6361:20053859
R. Chini, V. H. Hoffmeister, A. Nasseri, O. Stahl, H. Zinnecker, A spectroscopic survey on the multiplicity of high-mass stars Monthly Notices of the Royal Astronomical Society. ,vol. 424, pp. 1925- 1929 ,(2012) , 10.1111/J.1365-2966.2012.21317.X
William D. Taylor, Christopher J. Evans, Sergio Simón-Díaz, Hugues Sana, Norbert Langer, Nathan Smith, Stephen J. Smartt, Sher 25: pulsating but apparently alone Monthly Notices of the Royal Astronomical Society. ,vol. 442, pp. 1483- 1490 ,(2014) , 10.1093/MNRAS/STU925
Selma E. de Mink, Norbert Langer, Robert G. Izzard, Fast rotating stars resulting from binary evolution will often appear to be single arXiv: Solar and Stellar Astrophysics. ,(2010) , 10.1017/S174392131101132X
Brian D. Mason, William I. Hartkopf, Douglas R. Gies, Todd J. Henry, John W. Helsel, The High Angular Resolution Multiplicity of Massive Stars The Astronomical Journal. ,vol. 137, pp. 3358- 3377 ,(2009) , 10.1088/0004-6256/137/2/3358
C. M. McEvoy, P. L. Dufton, C. J. Evans, V. M. Kalari, N. Markova, S. Simón-Díaz, J. S. Vink, N. R. Walborn, P. A. Crowther, A. de Koter, S. E. de Mink, P. R. Dunstall, V. Hénault-Brunet, A. Herrero, N. Langer, D. J. Lennon, J. Maíz Apellániz, F. Najarro, J. Puls, H. Sana, F. R. N. Schneider, W. D. Taylor, The VLT-FLAMES Tarantula Survey XIX. B-type Supergiants - Atmospheric Parameters and Nitrogen Abundances to Investigate the Role of Binarity and the Width of the Main Sequence Astronomy and Astrophysics. ,vol. 575, ,(2015) , 10.1051/0004-6361/201425202
S. E. de Mink, H. Sana, N. Langer, R. G. Izzard, F. R. N. Schneider, THE INCIDENCE OF STELLAR MERGERS AND MASS GAINERS AMONG MASSIVE STARS The Astrophysical Journal. ,vol. 782, pp. 7- ,(2014) , 10.1088/0004-637X/782/1/7
S. E. de Mink, N. Langer, R. G. Izzard, H. Sana, A. de Koter, THE ROTATION RATES OF MASSIVE STARS: THE ROLE OF BINARY INTERACTION THROUGH TIDES, MASS TRANSFER, AND MERGERS The Astrophysical Journal. ,vol. 764, pp. 166- ,(2013) , 10.1088/0004-637X/764/2/166
Stephen Smartt, Carrie Trundle, C.J. Evans, D.J. Lennon, The VLT-FLAMES survey of massive stars: observations centered on the Magellanic Cloud clusters NGC 330, NGC 346, NGC 2004, and the N11 region Astronomy and Astrophysics. ,vol. 456, pp. 623- 638 ,(2006) , 10.1051/0004-6361:20064988
H. Sana, E. Gosset, C. J. Evans, The massive star binary fraction in young open clusters – II. NGC 6611 (Eagle Nebula) Monthly Notices of the Royal Astronomical Society. ,vol. 400, pp. 1479- 1492 ,(2009) , 10.1111/J.1365-2966.2009.15545.X