A small survey of the magnetic fields of planet-host stars
Using spectropolarimetry, we investigate the large-scale magnetic topologies of stars hosting close-in exoplanets. A small survey of 10 stars has been done with the twin instruments Télescope Bernard Lyot /NARVAL and Canada–France–Hawaii Telescope/ESPaDOnS between 2006 and 2011. Each target consists...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Main Authors: | , , , , , , , |
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Language: | English |
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2013
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/a-small-survey-of-the-magnetic-fields-of-planethost-stars(0d956c82-3ba3-4327-9eeb-73d0b7354bb3).html https://doi.org/10.1093/mnras/stt1386 https://research-repository.st-andrews.ac.uk/bitstream/10023/5141/1/Fares_2013_MNRAS_ASmall.pdf http://adsabs.harvard.edu/abs/2013MNRAS.435.1451F |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/0d956c82-3ba3-4327-9eeb-73d0b7354bb3 2024-06-23T07:57:32+00:00 A small survey of the magnetic fields of planet-host stars Fares, R. Moutou, C. Donati, J.-F. Catala, C. Shkolnik, E. L. Jardine, M. M. Cameron, A. C. Deleuil, M. 2013-10-21 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/a-small-survey-of-the-magnetic-fields-of-planethost-stars(0d956c82-3ba3-4327-9eeb-73d0b7354bb3).html https://doi.org/10.1093/mnras/stt1386 https://research-repository.st-andrews.ac.uk/bitstream/10023/5141/1/Fares_2013_MNRAS_ASmall.pdf http://adsabs.harvard.edu/abs/2013MNRAS.435.1451F eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/a-small-survey-of-the-magnetic-fields-of-planethost-stars(0d956c82-3ba3-4327-9eeb-73d0b7354bb3).html info:eu-repo/semantics/openAccess Fares , R , Moutou , C , Donati , J-F , Catala , C , Shkolnik , E L , Jardine , M M , Cameron , A C & Deleuil , M 2013 , ' A small survey of the magnetic fields of planet-host stars ' , Monthly Notices of the Royal Astronomical Society , vol. 435 , no. 2 , pp. 1451-1462 . https://doi.org/10.1093/mnras/stt1386 Techniques: polarimetric Stars: activity Stars: individual Stars: magnetic field Planetary systems article 2013 ftunstandrewcris https://doi.org/10.1093/mnras/stt1386 2024-06-13T00:41:10Z Using spectropolarimetry, we investigate the large-scale magnetic topologies of stars hosting close-in exoplanets. A small survey of 10 stars has been done with the twin instruments Télescope Bernard Lyot /NARVAL and Canada–France–Hawaii Telescope/ESPaDOnS between 2006 and 2011. Each target consists of circular polarization observations covering 7–22 d. For each of the seven targets in which a magnetic field was detected, we reconstructed the magnetic field topology using Zeeman–Doppler imaging. Otherwise, a detection limit has been estimated. Three new epochs of observations of τ Boo are presented, which confirm magnetic polarity reversal. We estimate that the cycle period is 2 yr, but recall that a shorter period of 240 d cannot still be ruled out. The result of our survey is compared to the global picture of stellar magnetic field properties in the mass–rotation diagram. The comparison shows that these giant planet-host stars tend to have similar magnetic field topologies to stars without detected hot Jupiters. This needs to be confirmed with a larger sample of stars. Article in Journal/Newspaper narval narval University of St Andrews: Research Portal Canada Monthly Notices of the Royal Astronomical Society 435 2 1451 1462 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Techniques: polarimetric Stars: activity Stars: individual Stars: magnetic field Planetary systems |
spellingShingle |
Techniques: polarimetric Stars: activity Stars: individual Stars: magnetic field Planetary systems Fares, R. Moutou, C. Donati, J.-F. Catala, C. Shkolnik, E. L. Jardine, M. M. Cameron, A. C. Deleuil, M. A small survey of the magnetic fields of planet-host stars |
topic_facet |
Techniques: polarimetric Stars: activity Stars: individual Stars: magnetic field Planetary systems |
description |
Using spectropolarimetry, we investigate the large-scale magnetic topologies of stars hosting close-in exoplanets. A small survey of 10 stars has been done with the twin instruments Télescope Bernard Lyot /NARVAL and Canada–France–Hawaii Telescope/ESPaDOnS between 2006 and 2011. Each target consists of circular polarization observations covering 7–22 d. For each of the seven targets in which a magnetic field was detected, we reconstructed the magnetic field topology using Zeeman–Doppler imaging. Otherwise, a detection limit has been estimated. Three new epochs of observations of τ Boo are presented, which confirm magnetic polarity reversal. We estimate that the cycle period is 2 yr, but recall that a shorter period of 240 d cannot still be ruled out. The result of our survey is compared to the global picture of stellar magnetic field properties in the mass–rotation diagram. The comparison shows that these giant planet-host stars tend to have similar magnetic field topologies to stars without detected hot Jupiters. This needs to be confirmed with a larger sample of stars. |
format |
Article in Journal/Newspaper |
author |
Fares, R. Moutou, C. Donati, J.-F. Catala, C. Shkolnik, E. L. Jardine, M. M. Cameron, A. C. Deleuil, M. |
author_facet |
Fares, R. Moutou, C. Donati, J.-F. Catala, C. Shkolnik, E. L. Jardine, M. M. Cameron, A. C. Deleuil, M. |
author_sort |
Fares, R. |
title |
A small survey of the magnetic fields of planet-host stars |
title_short |
A small survey of the magnetic fields of planet-host stars |
title_full |
A small survey of the magnetic fields of planet-host stars |
title_fullStr |
A small survey of the magnetic fields of planet-host stars |
title_full_unstemmed |
A small survey of the magnetic fields of planet-host stars |
title_sort |
small survey of the magnetic fields of planet-host stars |
publishDate |
2013 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-small-survey-of-the-magnetic-fields-of-planethost-stars(0d956c82-3ba3-4327-9eeb-73d0b7354bb3).html https://doi.org/10.1093/mnras/stt1386 https://research-repository.st-andrews.ac.uk/bitstream/10023/5141/1/Fares_2013_MNRAS_ASmall.pdf http://adsabs.harvard.edu/abs/2013MNRAS.435.1451F |
geographic |
Canada |
geographic_facet |
Canada |
genre |
narval narval |
genre_facet |
narval narval |
op_source |
Fares , R , Moutou , C , Donati , J-F , Catala , C , Shkolnik , E L , Jardine , M M , Cameron , A C & Deleuil , M 2013 , ' A small survey of the magnetic fields of planet-host stars ' , Monthly Notices of the Royal Astronomical Society , vol. 435 , no. 2 , pp. 1451-1462 . https://doi.org/10.1093/mnras/stt1386 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-small-survey-of-the-magnetic-fields-of-planethost-stars(0d956c82-3ba3-4327-9eeb-73d0b7354bb3).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stt1386 |
container_title |
Monthly Notices of the Royal Astronomical Society |
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435 |
container_issue |
2 |
container_start_page |
1451 |
op_container_end_page |
1462 |
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