Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL
New spectral line polarisation observations of 7 bright Ap stars have been obtained with the ESPaDOnS and Narval high resolution spectropolarimeters (Silvester et al. 2012). The aim of this data set is produce a series of surface magnetic field and surface chemistry maps for these Ap stars. We prese...
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ftdatacite:10.48550/arxiv.1310.5265 2023-05-15T18:50:42+02:00 Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL Silvester, J. Kochukhov, O. Wade, G. A. 2013 https://dx.doi.org/10.48550/arxiv.1310.5265 https://arxiv.org/abs/1310.5265 unknown arXiv https://dx.doi.org/10.1051/eas/1363009 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences article-journal Article ScholarlyArticle Text 2013 ftdatacite https://doi.org/10.48550/arxiv.1310.5265 https://doi.org/10.1051/eas/1363009 2022-04-01T13:12:47Z New spectral line polarisation observations of 7 bright Ap stars have been obtained with the ESPaDOnS and Narval high resolution spectropolarimeters (Silvester et al. 2012). The aim of this data set is produce a series of surface magnetic field and surface chemistry maps for these Ap stars. We present new magnetic maps for the Ap star $α^2$ CVn using these new data and the MDI inversion code INVERS10. $α^2$ CVn is the first Ap star to be observed during two separate epochs using high resolution phase resolved spectropolarimetric $IQUV$ observations and as such allows us an insight into how stable the surface magnetic structure is over a decade timescale. We show that the new maps give a magnetic field structure consistent with the previous maps obtained by Kochukhov and Wade (2010) from lower quality MuSiCoS spectra taken a decade ago and that the field topology cannot be described by a dipolar or quadrupolar field. : 6 pages, 3 figures. Proceedings of New advances in stellar physics: from microscopic to macroscopic processes (Roscoff 2013) Text narval narval DataCite Metadata Store (German National Library of Science and Technology) |
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Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
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Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences Silvester, J. Kochukhov, O. Wade, G. A. Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
topic_facet |
Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
description |
New spectral line polarisation observations of 7 bright Ap stars have been obtained with the ESPaDOnS and Narval high resolution spectropolarimeters (Silvester et al. 2012). The aim of this data set is produce a series of surface magnetic field and surface chemistry maps for these Ap stars. We present new magnetic maps for the Ap star $α^2$ CVn using these new data and the MDI inversion code INVERS10. $α^2$ CVn is the first Ap star to be observed during two separate epochs using high resolution phase resolved spectropolarimetric $IQUV$ observations and as such allows us an insight into how stable the surface magnetic structure is over a decade timescale. We show that the new maps give a magnetic field structure consistent with the previous maps obtained by Kochukhov and Wade (2010) from lower quality MuSiCoS spectra taken a decade ago and that the field topology cannot be described by a dipolar or quadrupolar field. : 6 pages, 3 figures. Proceedings of New advances in stellar physics: from microscopic to macroscopic processes (Roscoff 2013) |
format |
Text |
author |
Silvester, J. Kochukhov, O. Wade, G. A. |
author_facet |
Silvester, J. Kochukhov, O. Wade, G. A. |
author_sort |
Silvester, J. |
title |
Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
title_short |
Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
title_full |
Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
title_fullStr |
Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
title_full_unstemmed |
Stokes IQUV mapping of $α^2$ CVn & other Ap stars using ESPaDOnS and NARVAL |
title_sort |
stokes iquv mapping of $α^2$ cvn & other ap stars using espadons and narval |
publisher |
arXiv |
publishDate |
2013 |
url |
https://dx.doi.org/10.48550/arxiv.1310.5265 https://arxiv.org/abs/1310.5265 |
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narval narval |
genre_facet |
narval narval |
op_relation |
https://dx.doi.org/10.1051/eas/1363009 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1310.5265 https://doi.org/10.1051/eas/1363009 |
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1766244464203923456 |