Characterisation of the magnetic field of the Herbig Be star HD 200775⋆
Accepted. Received; in original form The origin of the magnetic fields observed in some intermediate mass and high mass main sequence stars is still a matter of vigorous debate. The favoured hypothesis is a fossil field origin, in which the observed fields are the condensed remnants of magnetic fiel...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.487.8896 2023-05-15T18:50:46+02:00 Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ E. Alecian C. Catala G. A. Wade J. -f. Donati P. Petit J. -c. Bouret S. Bagnulo C. Folsom J. Grunhut J. Silvester The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.487.8896 http://www.arm.ac.uk/preprints/2007/514.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.487.8896 http://www.arm.ac.uk/preprints/2007/514.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.arm.ac.uk/preprints/2007/514.pdf text ftciteseerx 2016-01-08T08:17:56Z Accepted. Received; in original form The origin of the magnetic fields observed in some intermediate mass and high mass main sequence stars is still a matter of vigorous debate. The favoured hypothesis is a fossil field origin, in which the observed fields are the condensed remnants of magnetic fields present in the original molecular cloud from which the stars formed. According to this theory a few percent of the PMS Herbig Ae/Be star should be magnetic with a magnetic topology similar to that of main sequence intermediate-mass stars. After our recent discovery of four magnetic Herbig stars, we have decided to study in detail one of them, HD 200775, to determine if its magnetic topology is similar to that of the main sequence magnetic stars. With this aim, we monitored this star in Stokes I and V over more than two years, using the new spectropolarimeters ESPaDOnS at CFHT, and Narval at TBL. By analysing the intensity spectrum we find that HD 200775 is a double-lined spectro-scopic binary system, whose secondary seems similar, in temperature, to the primary. We have Text narval narval Unknown |
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Accepted. Received; in original form The origin of the magnetic fields observed in some intermediate mass and high mass main sequence stars is still a matter of vigorous debate. The favoured hypothesis is a fossil field origin, in which the observed fields are the condensed remnants of magnetic fields present in the original molecular cloud from which the stars formed. According to this theory a few percent of the PMS Herbig Ae/Be star should be magnetic with a magnetic topology similar to that of main sequence intermediate-mass stars. After our recent discovery of four magnetic Herbig stars, we have decided to study in detail one of them, HD 200775, to determine if its magnetic topology is similar to that of the main sequence magnetic stars. With this aim, we monitored this star in Stokes I and V over more than two years, using the new spectropolarimeters ESPaDOnS at CFHT, and Narval at TBL. By analysing the intensity spectrum we find that HD 200775 is a double-lined spectro-scopic binary system, whose secondary seems similar, in temperature, to the primary. We have |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
E. Alecian C. Catala G. A. Wade J. -f. Donati P. Petit J. -c. Bouret S. Bagnulo C. Folsom J. Grunhut J. Silvester |
spellingShingle |
E. Alecian C. Catala G. A. Wade J. -f. Donati P. Petit J. -c. Bouret S. Bagnulo C. Folsom J. Grunhut J. Silvester Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
author_facet |
E. Alecian C. Catala G. A. Wade J. -f. Donati P. Petit J. -c. Bouret S. Bagnulo C. Folsom J. Grunhut J. Silvester |
author_sort |
E. Alecian |
title |
Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
title_short |
Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
title_full |
Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
title_fullStr |
Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
title_full_unstemmed |
Characterisation of the magnetic field of the Herbig Be star HD 200775⋆ |
title_sort |
characterisation of the magnetic field of the herbig be star hd 200775⋆ |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.487.8896 http://www.arm.ac.uk/preprints/2007/514.pdf |
genre |
narval narval |
genre_facet |
narval narval |
op_source |
http://www.arm.ac.uk/preprints/2007/514.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.487.8896 http://www.arm.ac.uk/preprints/2007/514.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766244515697393664 |