Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-17T13:09:47.650Z Has data issue: false hasContentIssue false
  • English
  • Français

Modeling the winds and magnetospheres of active OB stars

Published online by Cambridge University Press:  12 July 2011

Richard H. D. Townsend
Richard H. D. Townsend*
Affiliation:
Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

After briefly reviewing the theory behind the radiative line-driven winds of OB stars, I examine the processes that can generate structure in them; these include both intrinsic instabilities, and surface perturbations such as pulsation and rotation. I then delve into wind channeling and confinement by magnetic fields as a mechanism for forming longer-lived circumstellar structures. With a narrative that largely follows the historical progression of the field, I introduce the key insights and results that link the first detection of a magnetosphere, over three decades ago, to the recent direct measurement of magnetic braking in a number of active OB stars.

Keywords

magnetohydrodynamics: MHDstars: early-typestars: emission-linestars: magnetic fieldsstars: mass lossstars: rotationstars: windsoutflows
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. 148 - 159
Copyright
Copyright © International Astronomical Union 2011

References

Babel, J. & Montmerle, T. 1997a, A&A, 323, 121Google Scholar
Babel, J. & Montmerle, T. 1997b, ApJ (Letters), 485, L29CrossRefGoogle Scholar
Bouret, J.-C., Donati, J.-F., Martins, F., Escolano, C. et al. 2008, MNRAS, 389, 75CrossRefGoogle Scholar
Castor, J. I., Abbott, D. C., & Klein, R. I. 1975, ApJ, 195, 157CrossRefGoogle Scholar
Cranmer, S. R. & Owocki, S. P. 1995, ApJ, 440, 308CrossRefGoogle Scholar
Cranmer, S. R. & Owocki, S. P. 1996, ApJ, 462, 469CrossRefGoogle Scholar
Dessart, L. & Owocki, S. P. 2005, A&A, 437, 657Google Scholar
Donati, J.-F., Howarth, I. D., Bouret, J.-C., Petit, P. et al. 2006a, MNRAS, 365, L6CrossRefGoogle Scholar
Donati, J.-F., Howarth, I. D., Jardine, M. M., Petit, P. et al. 2006b, MNRAS, 370, 629CrossRefGoogle Scholar
Favata, F., Neiner, C., Testa, P., Hussain, G. et al. 2009, A&A, 495, 217Google Scholar
Feldmeier, A. & Owocki, S. 1998, Ap&SS, 260, 113Google Scholar
Fullerton, A. W., Massa, D. L., Prinja, R. K., Owocki, S. P. et al. 1997, A&A, 327, 699Google Scholar
Gagné, M., Oksala, M. E., Cohen, D. H., Tonnesen, S. K. et al. 2005a, ApJ, 628, 986CrossRefGoogle Scholar
Gagné, M., Oksala, M. E., Cohen, D. H., Tonnesen, S. K. et al. 2005b, ApJ, 634, 712CrossRefGoogle Scholar
Gayley, K. G. 1995, ApJ, 454, 410CrossRefGoogle Scholar
Groote, D. & Hunger, K. 1982, A&A, 116, 64Google Scholar
Henrichs, H. F., de Jong, J. A., Donati, J.-F., Catala, C. et al. 2000, in: Smith, M. A., Henrichs, H. F., & Fabregat, J. (eds.), IAU Colloq. 175: The Be Phenomenon in Early-Type Stars, ASP-CS 214, p. 324CrossRefGoogle Scholar
Kaper, L. & Henrichs, H. F. 1994, Ap&SS, 221, 115Google Scholar
Kaufer, A., Stahl, O., Prinja, R. K., & Witherick, D. 2006, A&A, 447, 325Google Scholar
Lamers, H. J. G. & Pauldrach, A. W. A. 1991, A&A, 244, L5Google Scholar
Landstreet, J. D. & Borra, E. F. 1978, ApJ (Letters), 224, L5CrossRefGoogle Scholar
Leone, F., Bohlender, D. A., Bolton, C. T., Buemi, C. et al. 2010, MNRAS, 401, 2739CrossRefGoogle Scholar
Lucy, L. B. & Solomon, P. M. 1970, ApJ, 159, 879CrossRefGoogle Scholar
Maeder, A. & Meynet, G. 2000, A&A, 361, 159Google Scholar
Michel, F. C. & Sturrock, P. A. 1974, Planetary & Space Science, 22, 1501CrossRefGoogle Scholar
Mikulášek, Z., Krtička, J., Henry, G. W., Zverko, J. et al. 2008, A&A, 485, 585Google Scholar
Mullan, D. J. 1984, ApJ, 283, 303CrossRefGoogle Scholar
Nakajima, R. 1981, Sci. Rep. Tohoku Univ. Eighth Ser., 2, 130Google Scholar
Nakajima, R. 1985, Ap&SS, 116, 285Google Scholar
Owocki, S. P. 1991, in: NATO ASIC Proc. 341: Stellar Atmospheres – Beyond Classical Models (Dordrecht, D. Reidel Publishing Co.), p. 235CrossRefGoogle Scholar
Owocki, S. 2004, in: Heydari-Malayeri, M., Stee, P., & Zahn, J.-P. (eds.), EAS Publications Series 13, p. 163CrossRefGoogle Scholar
Owocki, S. P. & Rybicki, G. B. 1984, ApJ, 284, 337CrossRefGoogle Scholar
Owocki, S. P., Cranmer, S. R., & Fullerton, A. W. 1995, ApJ (Letters), 453, L37CrossRefGoogle Scholar
Owocki, S. P. & ud-Doula, A. 2004, ApJ, 600, 1004CrossRefGoogle Scholar
Owocki, S. P. & Cohen, D. H. 2006, ApJ, 648, 565CrossRefGoogle Scholar
Preuss, O., Schüssler, M., Holzwarth, V., & Solanki, S. K. 2004, A&A, 417, 987Google Scholar
Prinja, R. K., Massa, D., & Fullerton, A. W. 1995, ApJ (Letters), 452, L61CrossRefGoogle Scholar
Shore, S. N. & Brown, D. N. 1990, ApJ, 365, 665CrossRefGoogle Scholar
Smith, N., Davidson, K., Gull, T. R., Ishibashi, K. et al. 2003, ApJ, 586, 432CrossRefGoogle Scholar
Townsend, R. H. D. & Owocki, S. P. 2005, MNRAS, 357, 251CrossRefGoogle Scholar
Townsend, R. H. D., Owocki, S. P., & Groote, D. 2005, ApJ (Letters), 630, L81CrossRefGoogle Scholar
Townsend, R. H. D., Owocki, S. P., & Ud-Doula, A. 2007, MNRAS, 382, 139CrossRefGoogle Scholar
Townsend, R. H. D., Oksala, M. E., Cohen, D. H., Owocki, S. P. et al. 2010, ApJ (Letters), 714, L318CrossRefGoogle Scholar
ud-Doula, A. & Owocki, S. P. 2002, ApJ, 576, 413CrossRefGoogle Scholar
Ud-Doula, A., Owocki, S. P., & Townsend, R. H. D. 2008, MNRAS, 385, 97CrossRefGoogle Scholar
Ud-Doula, A., Owocki, S. P., & Townsend, R. H. D. 2009, MNRAS, 392, 1022CrossRefGoogle Scholar
Wade, G. A., Fullerton, A. W., Donati, J.-F., Landstreet, J. D. et al. 2006, A&A, 451, 195Google Scholar
Walborn, N. R. 1974, ApJ (Letters), 191, L95CrossRefGoogle Scholar
von Zeipel, H. 1924, MNRAS, 84, 665CrossRefGoogle Scholar