Hostname: page-component-8448b6f56d-c4f8m Total loading time: 0 Render date: 2024-04-23T07:16:10.381Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Doppler imaging of early-type stars

Published online by Cambridge University Press:  12 July 2011

Oleg Kochukhov ,
Thomas Rivinius ,
Mary E. Oksala  and
Iosif Romanyuk
Oleg Kochukhov
Affiliation:
Dept. Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
Thomas Rivinius
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
Mary E. Oksala
Affiliation:
Dept. of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
Iosif Romanyuk
Affiliation:
Special Astrophysical Observatory of RAS, Nizhnij Arkhyz 369167, Russia
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.

Doppler imaging of early-type magnetic stars is the most advanced method to interpret their line profile variations. DI allows us to study directly a complex interplay between chemical spots, magnetic fields, and the mass loss. Here we outline the general principles of the surface mapping of stars, discuss adaption of this technique to early-type stars and present several recent examples of the abundance and magnetic mapping performed for rapidly rotating early-B stars. In particular, we present the first Doppler images for the very fast rotating He-rich star HR 7355 and a reconstruction of magnetic field for the well-known Bp star σ Ori E. We also present new magnetic maps for the He-strong star HD 37776, which possesses one of the most complex magnetic field topologies among the upper main sequence stars.

Keywords

polarizationstars: chemically peculiarstars: magnetic fieldsstars: atmospheresstars: individual (HR 7355, σOri E, HD 37776)
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. 166 - 171
Copyright
Copyright © International Astronomical Union 2011

References

Adelman, S. J. 1997, A&AS, 125, 65Google Scholar
Bohlender, D. A. 1994, in: Balona, L. A., Henrichs, H. F., & Le Contel, J. M. (eds.), Pulsation; Rotation; and Mass Loss in Early-Type Stars, IAU Symposium 162, p. 155CrossRefGoogle Scholar
Brown, S. F., Donati, J.-F., Rees, D. E., & Semel, M. 1991, A&A, 250, 463Google Scholar
Donati, J.-F. & Landstreet, J. D. 2009, ARAA, 47, 333CrossRefGoogle Scholar
Donati, J.-F., Howarth, I. D., Jardine, M. M., Petit, P. et al. 2006, MNRAS, 370, 629CrossRefGoogle Scholar
Donati, J.-F., Semel, M., Carter, B. D., Rees, D. E. et al. 1997, MNRAS, 291, 658CrossRefGoogle Scholar
Groote, D. & Hunger, K. 1982, A&A, 116, 64Google Scholar
Khokhlova, V. L., Rice, J. B., & Wehlau, W. H. 1986, ApJ, 307, 768CrossRefGoogle Scholar
Khokhlova, V. L., Vasilchenko, D. V., Stepanov, V. V., & Romanyuk, I. I. 2000, Astron. Lett., 26, 177CrossRefGoogle Scholar
Kochukhov, O., Drake, N. A., Piskunov, N. & de la Reza, R. 2004, A&A, 424, 935Google Scholar
Kochukhov, O. & Piskunov, N. 2002, A&A, 388, 868Google Scholar
Kochukhov, O., Piskunov, N., Ilyin, I., Ilyina, S. et al. 2002, A&A, 389, 420Google Scholar
Kochukhov, O., Tsymbal, V., Ryabchikova, T., Makaganyk, V. et al. 2006, A&A, 460, 831Google Scholar
Kochukhov, O. & Wade, G. A. 2010, A&A, 513, A13Google Scholar
Krtička, J., Mikuláček, Z., Zverko, J. & Žižńovský, J. 2007, A&A, 470, 1089Google Scholar
Landstreet, J. D. 1992, A&AR, 4, 35Google Scholar
Landstreet, J. D. & Borra, E. F. 1978, ApJ (Letters), 224, L5CrossRefGoogle Scholar
Leblanc, F., Monin, D., Hui-Bon-Hoa, A., & Hauschildt, P. H. 2009, A&A, 495, 937Google Scholar
Mikulášek, Z., Krtička, J., Henry, G. W., Zverko, J. et al. 2008, A&A, 485, 585Google Scholar
Oksala, M. E., Wade, G. A., Marcolino, W. L. F., Grunhut, J. et al. 2010, MNRAS, 405, L51CrossRefGoogle Scholar
Piskunov, N. & Kochukhov, O. 2002, A&A, 381, 736Google Scholar
Reiners, A., Stahl, O., Wolf, B., Kaufer, A. et al. 2000, A&A, 363, 585Google Scholar
Rivinius, T., Szeifert, T., Barrera, L., Townsend, R. H. D. et al. 2010, MNRAS, 405, L46CrossRefGoogle Scholar
Rivinius, T., Štefl, S., Townsend, R. H. D., & Baade, D. 2008, A&A, 482, 255Google Scholar
Thompson, I. B. & Landstreet, J. D. 1985, ApJ (Letters), 289, L9CrossRefGoogle 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
Veto, B., Hempelmann, A., Schoeneich, W., & Stahlberg, J. 1991, AN, 312, 133Google Scholar
Vogt, S. S., Penrod, G. D., & Hatzes, A. P. 1987, ApJ, 321, 496CrossRefGoogle Scholar