Stellar magnetic fields in swollen convection zones
Paper
Paper/Presentation Title | Stellar magnetic fields in swollen convection zones |
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Presentation Type | Paper |
Authors | Marsden, S. C. (Author), Donati, J. -F. (Author), Petit, P. (Author), Dunstone, N. J. (Author), Jardine, M. (Author), Carter, B. D. (Author), Waite, I. A. (Author), Semel, M. (Author) and Ramirez, J. (Author) |
Editors | Berdyugina, Svetlana V., Nagendra, K. N. and Ramelli, Renzo |
Journal or Proceedings Title | Proceedings of the 5th Astronomical Society of the Pacific Conference (SPW 5) |
Journal Citation | 405, pp. 531-534 |
Number of Pages | 4 |
Year | 2009 |
Place of Publication | San Francisco, CA. United States |
ISBN | 9781583816905 |
9781583816912 | |
Web Address (URL) of Paper | http://aspbooks.org/custom/publications/paper/405-0531.html |
Conference/Event | Astronomical Society of the Pacific Conference(SPW5): 5th Solar Polarization Workshop: a Workshop In Honor of Jan Olof Stenflo |
Astronomical Society of the Pacific Conference | |
Event Details | Astronomical Society of the Pacific Conference(SPW5): 5th Solar Polarization Workshop: a Workshop In Honor of Jan Olof Stenflo Event Date 17 to end of 21 Sep 2007 Event Location Ascona, Switzerland |
Event Details | Astronomical Society of the Pacific Conference ASP |
Abstract | Solar magnetic activity is generated through dynamo action operating at the base of the solar convection zone. However, for rapidly rotating solar-type stars this might not be the case with magnetic images showing regions of near-surface azimuthal field indicating that the operation of dynamo may in fact be distributed throughout the entire convection zone. Here we present the first magnetic images of a pre-main sequence star with both components having swollen outer convection zones. These results are part of an international study to understand how the generation of magnetic fields is affected by basic stellar parameters such as mass, rotation rate, the depth of the stellar convection zone, and binarity. The magnetic images were obtained by observing the star in circularly polarised light and using the technique of Zeeman Doppler imaging. |
Keywords | solar; stellar; magnetic fields; swollen convention zones |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
510402. Condensed matter imaging | |
490199. Applied mathematics not elsewhere classified | |
Public Notes | Copyright 2009 Astronomical Society of the Pacific. This publication is copyright. It may be reproduced by an individual user 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 | Anglo-Australian Observatory, Australia |
Institute for Research in Astrophysics and Planetology, France | |
Midi-Pyrenees Observatory, France | |
University of St Andrews, United Kingdom | |
Centre for Astronomy, Solar Radiation and Climate | |
Laboratory of Space Science and Astrophysical Instrumentation, France | |
Paris Sciences and Letters University, France |
https://research.usq.edu.au/item/9z34y/stellar-magnetic-fields-in-swollen-convection-zones
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Marsden_etal_ASP2009_PV.pdf | ||
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