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The multiplicity of massive stars

Published online by Cambridge University Press:  12 July 2011

Hugues Sana  and
Christopher J. Evans
Hugues Sana
Affiliation:
Sterrenkundig Instituut Anton Pannekoek, University of Amsterdam, Postbus 94249, NL-1090 GE Amsterdam, The Netherlands email: h.sana@uva.nl
Christopher J. Evans
Affiliation:
UK Astronomy Technology Centre, Royal Observatory Edinburgh Blackford Hill, Edinburgh, EH9 3HJ, UK email: chris.evans@stfc.ac.uk
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Abstract

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Binaries are excellent astrophysical laboratories that provide us with direct measurements of fundamental stellar parameters. Compared to single isolated stars, multiplicity induces new processes, offering the opportunity to confront our understanding of a broad range of physics under the extreme conditions found in, and close to, astrophysical objects.

In this contribution, we will discuss the parameter space occupied by massive binaries, and the observational means to investigate it. We will review the multiplicity fraction of OB stars within each regime, and in different astrophysical environments. In particular we will compare the O star spectroscopic binary fraction in nearby open clusters and we will show that the current data are adequately described by an homogeneous fraction of f ≈ 0.44.

We will also summarize our current understanding of the observed parameter distributions of O + OB spectroscopic binaries. We will show that the period distribution is overabundant in short period binaries and that it can be described by a bi-modal Öpik law with a break point around P ≈ 10 d. The distribution of the mass-ratios shows no indication for a twin population of equal mass binaries and seems rather uniform in the range 0.2 ≤ q = M2/M1 ≤ 1.0.

Keywords

binaries (including multiple): closebinaries: generalbinaries: spectroscopicbinaries: visualstars: early-typeopen clusters and associations: individual (Col 228, IC1 805, IC 1848, IC 2944, NGC 330, NGC 346, NGC 2004, NGC 2244, NGC 6231, NGC 6611, N 11, Tr 14, Tr 16, West 1, 30 Dor)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 474 - 485
Copyright
Copyright © International Astronomical Union 2011

References

Abt, H. A. 1988, ApJ, 331, 922CrossRefGoogle Scholar
Bagnuolo, W. G. Jr., Gies, D. R., Riddle, R., & Penny, L. R. 1999, ApJ, 527, 353CrossRefGoogle Scholar
Bosch, G., Terlevich, E., & Terlevich, R. 2009, AJ, 137, 3437CrossRefGoogle Scholar
Braun, H. & Langer, N. 1995, A&A, 297, 483Google Scholar
Brinchmann, J., Kunth, D., & Durret, F. 2008, A&A, 485, 657Google Scholar
Cassinelli, J. P., Mathis, J. S., & Savage, B. D. 1981, Science, 212, 1497CrossRefGoogle Scholar
Crowther, P. A., Schnurr, O., Hirschi, R., Yusof, N. et al. 2010, MNRAS, 408, 731CrossRefGoogle Scholar
De Becker, M. 2007, A&AR, 14, 171Google Scholar
de Mink, S. E., Cantiello, M., Langer, N., & Pols, O. R. et al. 2009, A&A, 497, 243Google Scholar
Duchêne, G., Simon, T., Eislöffel, J., & Bouvier, J. 2001, A&A, 379, 147Google Scholar
Eldridge, J. J., Izzard, R. G., & Tout, C. A. 2008, MNRAS, 384, 1109CrossRefGoogle Scholar
Evans, C. J., Bastian, N., Beletsky, Y., & Brott, I. et al. 2010, in: de Grijs, R. & Lépine, J. R. D. (eds.), Star clusters: basic galactic building blocks throughout time and space, IAU Symposium 266, p. 35Google Scholar
Evans, C. J., Lennon, D. J., Smartt, S. J., & Trundle, C. 2006, A&A, 456, 623Google Scholar
García, B., Malaroda, S., Levato, H., & Morrell, N. et al. 1998, PASP, 110, 53CrossRefGoogle Scholar
García, B. & Mermilliod, J. C. 2001, A&A, 368, 122Google Scholar
Gieles, M., Sana, H. & Portegies Zwart, S. F. 2010, MNRAS, 402, 1750CrossRefGoogle Scholar
Heggie, D. C. 1975, MNRAS, 173, 729CrossRefGoogle Scholar
Hillwig, T. C., Gies, D. R., Bagnuolo, W. G. Jr., & Huang, W. et al. 2006, ApJ, 639, 1069CrossRefGoogle Scholar
Izzard, R. G., Dray, L. M., Karakas, A. I., & Lugaro, M. et al. 2006, A&A, 460, 565Google Scholar
Langer, N., Cantiello, M., Yoon, S.-C., & Hunter, I. et al. 2008, in: Bresolin, F., Crowther, P. A., & Puls, J. (eds.), Massive Stars as Cosmic Engines, IAU Symposium 250, p. 167CrossRefGoogle Scholar
Linder, N., Rauw, G., Sana, H., & De Becker, M. et al. 2007, A&A, 474, 193Google Scholar
Mahy, L., Nazé, Y., Rauw, G., & Gosset, E. et al. 2009, A&A, 502, 937Google Scholar
Maíz-Apellániz, J., Walborn, N. R., Galué, H. Á., & Wei, L. H. 2004, ApJS, 151, 103CrossRefGoogle Scholar
Maíz Apellániz, J. 2010, A&A, 518, A1Google Scholar
Martins, F., Schaerer, D., & Hillier, D. J. 2005, A&A, 436, 1049Google Scholar
Mason, B. D., Hartkopf, W. I., Gies, D. R., & Henry, T. J. et al. 2009, AJ, 137, 3358CrossRefGoogle Scholar
Nelan, E. P., Walborn, N. R., Wallace, D. J., & Moffat, A. F. J. et al. 2004, AJ, 128, 323CrossRefGoogle Scholar
Packet, W. 1981, A&A, 102, 17Google Scholar
Parkin, E. R. & Pittard, J. M. 2010, MNRAS, 406, 2373CrossRefGoogle Scholar
Penny, L. R., Gies, D. R., Hartkopf, W. I., & Mason, B. D. et al. 1993, PASP, 105, 588CrossRefGoogle Scholar
Pinsonneault, M. H. & Stanek, K. Z. 2006, ApJ (Letters), 639, L67CrossRefGoogle Scholar
Portegies Zwart, S. F., McMillan, S. L. W., & Gieles, M. 2010, ARAA, 48, 431CrossRefGoogle Scholar
Ritchie, B. W., Clark, J. S., Negueruela, I., & Crowther, P. A. 2009, A&A, 507, 1585Google Scholar
Sana, H., Gosset, E., & Evans, C. J. 2009, MNRAS, 400, 1479CrossRefGoogle Scholar
Sana, H., Gosset, E., Nazé, Y., & Rauw, G. et al. 2008, MNRAS, 386, 447CrossRefGoogle Scholar
Sana, H., James, G., & Gosset, E. 2010a, MNRAS, submittedGoogle Scholar
Sana, H., Momany, Y., Gieles, M., Carraro, G. et al. 2010b, A&A, 515, A26Google Scholar
Sana, H., Rauw, G., & Gosset, E. 2001, A&A, 370, 121Google Scholar
Sana, H., Rauw, G., Nazé, Y., & Gosset, E. et al. 2006, MNRAS, 372, 661CrossRefGoogle Scholar
Stevens, I. R., Blondin, J. M. & Pollock, A. M. T. 1992, ApJ, 386, 265CrossRefGoogle Scholar
Turner, N. H., ten Brummelaar, T. A., Roberts, L. C., & Mason, B. D. et al. 2008, AJ, 136, 554CrossRefGoogle Scholar
Tuthill, P. G., Monnier, J. D., Lawrance, N., & Danchi, W. C. et al. 2008, ApJ, 675, 698CrossRefGoogle Scholar
Usov, V. V. 1992, ApJ, 389, 635CrossRefGoogle Scholar
Vanbeveren, D. 2009, New Astron. Revs, 53, 27CrossRefGoogle Scholar
Weigelt, G. & Baier, G. 1985, A&A, 150, L18Google Scholar
Zinnecker, H. & Yorke, H. W. 2007, ARAA, 45, 481CrossRefGoogle Scholar