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The nearby magnetic cool DZ white dwarf PM J08186-3110

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dc.contributor.authorKawka, Adela
dc.contributor.authorVennes, Stephane
dc.contributor.authorAllard, Nicole F.
dc.contributor.authorLeininger, T.
dc.contributor.authorGadéa, F. X.
dc.date.accessioned2024-03-08T00:01:01Z
dc.date.available2024-03-08T00:01:01Z
dc.date.issued2021
dc.date.updated2022-10-16T07:26:07Z
dc.description.abstractWe present an analysis of photometric, spectroscopic, and spectropolarimetric data of the nearby, cool, magnetic DZ white dwarf PM J08186−3110. High-dispersion spectra show the presence of Zeeman splitted spectral lines due to the presence of a surface average magnetic field of 92 kG. The strong magnesium and calcium lines show extended wings shaped by interactions with neutral helium in a dense, cool helium-rich atmosphere. We found that the abundance of heavy elements varied between spectra taken 10 years apart but we could not establish a time-scale for these variations; such variations may be linked to surface abundance variations in the magnetized atmosphere. Finally, we show that volume-limited samples reveal that about 40 per cent of DZ white dwarfs with effective temperatures below 7000 K are magnetic.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0035-8711en_AU
dc.identifier.urihttp://hdl.handle.net/1885/315821
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/24618..."The Published Version can be archived in an Institutional Repository" from SHERPA/RoMEO site (as at 4/03/2024). This article has been accepted for publication in [Monthly Notices of the Royal Astronomical Society] ©: 2020 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en_AU
dc.publisherOxford University Pressen_AU
dc.rights© 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Societyen_AU
dc.sourceMonthly Notices of the Royal Astronomical Societyen_AU
dc.titleThe nearby magnetic cool DZ white dwarf PM J08186-3110en_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue2en_AU
local.bibliographicCitation.lastpage2740en_AU
local.bibliographicCitation.startpage2732en_AU
local.contributor.affiliationKawka, Adela, Curtin Universityen_AU
local.contributor.affiliationVennes, Stephane, College of Science, ANUen_AU
local.contributor.affiliationAllard, Nicole F., GEPI, Observatoire de Paris, Universite PSLen_AU
local.contributor.affiliationLeininger, T., Universite de Toulouse (UPS) and CNRSen_AU
local.contributor.affiliationGadéa, F. X., Laboratoire de Chimie et Physique Quantiques, UMR 5626, Universite de Toulouse (UPS) and CNRSen_AU
local.contributor.authoruidVennes, Stephane, u9711096en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor490399 - Numerical and computational mathematics not elsewhere classifieden_AU
local.identifier.ariespublicationa383154xPUB18129en_AU
local.identifier.citationvolume500en_AU
local.identifier.doi10.1093/mnras/staa3421en_AU
local.identifier.scopusID2-s2.0-85099971358
local.identifier.thomsonIDWOS:000605983000089
local.publisher.urlhttps://academic.oup.com/mnrasen_AU
local.type.statusPublished Versionen_AU

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