Reference : First HARPSpol discoveries of magnetic fields in massive stars
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/110677
First HARPSpol discoveries of magnetic fields in massive stars
English
Alecian, E. mailto [LESIA-Observatoire de Paris, CNRS, UPMC Univ., Univ. Paris-Diderot, 5 place Jules Janssen, 92195, Meudon Principal Cedex, France]
Kochukhov, O. [Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden]
Neiner, C. [LESIA-Observatoire de Paris, CNRS, UPMC Univ., Univ. Paris-Diderot, 5 place Jules Janssen, 92195, Meudon Principal Cedex, France]
Wade, G. A. [Dept. of Physics, Royal Military College of Canada, PO Box 17000, Stn Forces, Kingston, K7K 7B4, Canada]
de Batz, B. [LESIA-Observatoire de Paris, CNRS, UPMC Univ., Univ. Paris-Diderot, 5 place Jules Janssen, 92195, Meudon Principal Cedex, France]
Henrichs, H. [Astronomical Institute Anton Pannekoek, University of Amsterdam, Science Park 904, 1098XH, Amsterdam, The Netherlands]
Grunhut, J. H. [Dept. of Physics, Royal Military College of Canada, PO Box 17000, Stn Forces, Kingston, K7K 7B4, Canada]
Bouret, J*-C [Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, BP8-13376, Marseille Cedex 12, France]
Briquet, Maryline mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
Gagne, M. [Department of Geology and Astronomy, West Chester University, West Chester, PA, 19383, USA]
Nazé, Yaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique observationnelle (sol et espace)]
Oksala, M. E. [Department of Physics and Astronomy, University of Delaware, Newark, DE, 19716, USA]
Rivinius, T. [European Organisation for Astronomical Research in the Southern Hemisphere, Casilla 19001, Santiago 19, Chile]
Townsend, R. H. D. [Dept. of Astronomy, University of Wisconsin-Madison, 475 N. Charter Street, Madison, WI, 53706-1582, USA]
Walborn, N. R. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA]
Weiss, W. [Institut für Astronomie, Universität Wien, Türkenschanzstrasse 17, 1180, Wien, Austria]
Mimes, Collaboration [> > > >]
1-Dec-2011
Astronomy and Astrophysics
EDP Sciences
536
L6
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: massive ; stars: magnetic field ; stars: chemically peculiar ; stars: individual: HD 122451 ; stars: individual: HD 105382 ; stars: individual: HD 130807
[en] In the framework of the Magnetism in Massive Stars (MiMeS) project, a HARPSpol Large Program at the 3.6m-ESO telescope has recently started to collect high-resolution spectropolarimetric data of a large number of Southern massive OB stars in the field of the Galaxy and in many young clusters and associations. We report on the first discoveries of magnetic fields in two massive stars with HARPSpol - HD 130807 and HD 122451, and confirm the presence of a magnetic field at the surface of HD 105382 that was previously observed with a low spectral resolution device. The longitudinal magnetic field measurements strongly vary for HD 130807 from ~-100 G to ~700 G. Those of HD 122451 and HD 105382 are less variable with values ranging from ~-40 to -80 G, and from ~-300 to -600 G, respectively. The discovery and confirmation of three new magnetic massive stars, including at least two He-weak stars, is an important contribution to one of MiMeS objectives: the understanding of the origin of magnetic fields in massive stars and their impact on stellar structure and evolution. Based on observations collected at the European Southern Observatory, Chile (Program ID 187.D-0917).
Researchers
http://hdl.handle.net/2268/110677
10.1051/0004-6361/201118354
http://cdsads.u-strasbg.fr/abs/2011A%26A...536L...6A
http://de.arxiv.org/abs/1111.3433

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