Magnetism in pre-MS intermediate-mass stars and the fossil field hypothesis
Paper
Paper/Presentation Title | Magnetism in pre-MS intermediate-mass stars and the fossil field hypothesis |
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Presentation Type | Paper |
Authors | Alecian, E. (Author), Wade, G. A. (Author), Catala, C. (Author), Folsom, C. (Author), Grunhut, J. (Author), Donati, J. -F. (Author), Petit, P. (Author), Bagnulo, S. (Author), Marsden, S. C. (Author), Ramirez, J. (Author), Landstreet, J. D. (Author), Boehm, T. (Author), Bouret, J. -C. (Author) and Silvester, J. (Author) |
Journal or Proceedings Title | Contributions of the Astronomical Observatory Skalnate Pleso |
Journal Citation | 38 (2), pp. 235-244 |
Number of Pages | 10 |
Year | 2008 |
Publisher | Vydavatel'stvo Slovenskej Akademie Vied Veda |
Place of Publication | Bratislava, Slovakia |
ISSN | 1335-1842 |
1336-0337 | |
Web Address (URL) of Paper | http://www.astro.sk/caosp/Eedition/Abstracts/2008/Vol_38/No_2/index.html |
Conference/Event | CP#AP Workshop 2007 |
Event Details | CP#AP Workshop 2007 Event Date 10 to end of 14 Sep 2007 Event Location Vienna, Austria |
Abstract | Today, one of the greatest challenges concerning the Ap/Bp stars is to understand the origin of their slow rotation and their magnetic fields. The favoured hypothesis for the latter is the fossil field, which implies that the magnetic fields subsist throughout the different evolutionary phases, and in particular during the pre-main sequence phase. The existence of magnetic fields at the pre-main sequence phase is also required to explain the slow rotation of Ap/Bp stars. However, until recently, essentially no information was available about the magnetic properties of intermediate-mass pre-main sequence stars, the so-called Herbig Ae/Be stars. The new high-resolution spectropolarimeter ESPaDOnS, installed in 2005 at the Canada-France-Hawaii telescope, provided the capability necessary to perform surveys of the Herbig Ae/Be stars in order to investigate their magnetism and rotation. These investigations have resulted in the detection and/or confirmation of magnetic fields in 8 Herbig Ae/Be stars, ranging in mass from 2 to nearly 15 solar masses. In this contribution we will present the results of our survey, as well as their implications for the origin and evolution of the magnetic fields and rotation. |
Keywords | Herbig; stars; magnetic fields; pre-main sequence; spectropolaximetry |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
510903. Mesospheric, thermospheric, ionospheric and magnetospheric physics | |
Public Notes | This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. |
Byline Affiliations | Laboratory of Space Science and Astrophysical Instrumentation, France |
Royal Military College of Canada, Canada | |
Armagh Observatory, United Kingdom | |
Institute for Research in Astrophysics and Planetology, France | |
Midi-Pyrenees Observatory, France | |
Anglo-Australian Observatory, Australia | |
Paris Sciences and Letters University, France | |
University of Western Ontario, Canada | |
University of Marseilles, France | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2qzq/magnetism-in-pre-ms-intermediate-mass-stars-and-the-fossil-field-hypothesis
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