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The magnetic field of the chemically peculiar star V352 Peg

dc.contributorLESIA, Paris Observatory, PSL University, CNRS, Sorbonne University, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France; Central School of Nantes, 1 rue de la Noë, F-44300 Nantes, France; Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, 2800 Kgs. Lyngby, Denmark
dc.contributorLESIA, Paris Observatory, PSL University, CNRS, Sorbonne University, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France
dc.contributorUniversity of Western Ontario, Department of Physics & Astronomy, London, Ontario N6A 3K7, Canada; Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, Northern Ireland, UK
dc.contributorUniversity of Tartu, Faculty of Science and Technology, Tartu Observatory, 50090 Tartu, Estonia
dc.contributorDept. of Physics & Space Science, Royal Military College of Canada, PO Box 17000 Station Forces, Kingston, ON K7K 0C6, Canada
dc.contributor.authorFréour, L.
dc.contributor.authorNeiner, C.
dc.contributor.authorLandstreet, J. D.
dc.contributor.authorFolsom, C. P.
dc.contributor.authorWade, G. A.
dc.date.accessioned2024-02-21T11:02:49Z
dc.date.available2024-02-21T11:02:49Z
dc.date.issued2023-04-01T00:00:00Z
dc.identifier.doi10.1093/mnras/stac2104
dc.identifier.doi10.48550/arXiv.2207.12887
dc.identifier.other2022MNRAS.tmp.2005F
dc.identifier.other2022arXiv220712887F
dc.identifier.otherastro-ph.SR
dc.identifier.other10.48550/arXiv.2207.12887
dc.identifier.other10.1093/mnras/stac2104
dc.identifier.other2023MNRAS.520.3201F
dc.identifier.other2022arXiv220712887F
dc.identifier.otherarXiv:2207.12887
dc.identifier.other2022MNRAS.tmp.2005F
dc.identifier.other0000-0003-3355-0079
dc.identifier.other0000-0003-1978-9809
dc.identifier.other0000-0001-8218-8542
dc.identifier.other0000-0002-9023-7890
dc.identifier.other-
dc.identifier.urihttp://hdl.handle.net/20.500.14302/1688
dc.description.abstractWe present a spectropolarimetric analysis of the hot star V352 Peg. We have acquired 18 spectropolarimetric observations of the star with ESPaDOnS at the CFHT between 2018 and 2019 and completed our data set with one archival ESPaDOnS measurement obtained in 2011. Our analysis of the spectra shows that the star is on the main sequence and chemically peculiar, i.e. it is a Bp star, with overabundances of iron peak elements (Ti, Cr, and Fe) and underabundance of He and O. Through a Least-Square Deconvolution of each spectrum, we extracted the mean Zeeman signature and mean line profile of thousands of spectral lines and detected a magnetic field in V352 Peg. By modelling the Stokes I and V profiles and using the Oblique Rotator Model, we determined the geometrical configuration of V352 Peg. We also performed Zeeman-Doppler Imaging (ZDI) to provide a more detailed characterization of the magnetic field of V352 Peg and its surface chemical distributions. We find a magnetic field that is mainly dipolar, dominantly poloidal, and largely non-axisymmetric with a dipole field strength of ~9 kG and a magnetic axis almost perpendicular to the rotation axis. The strong variability of Stokes I profiles also suggests the presence of chemical spots at the stellar surface.
dc.publisherMonthly Notices of the Royal Astronomical Society
dc.titleThe magnetic field of the chemically peculiar star V352 Peg
dc.typearticle
dc.source.journalMNRAS
dc.source.journalMNRAS.520
dc.source.volume520
refterms.dateFOA2024-02-21T11:02:49Z
dc.identifier.bibcode2023MNRAS.520.3201F


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