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On the nature of the magnetic DB white dwarfs

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dc.contributor.authorWickramasinghe, Dayal
dc.contributor.authorSchmidt, Gary
dc.contributor.authorFerrario, Lilia
dc.contributor.authorVennes, Stephane
dc.date.accessioned2015-12-13T22:23:12Z
dc.date.issued2002
dc.date.updated2015-12-11T08:03:16Z
dc.description.abstractWe use recent calculations of the Zeeman splitting of neutral helium lines and atmospheric models to investigate the properties of the magnetic DB white dwarfs in the field range 10-1000 MG. We confirm that GD 229 exhibits spectroscopic signatures indicative of neutral helium in a magnetic field of ∼500 MG, and argue that HE 1043-0502 may also be helium rich with an even higher field of ∼750 MG. The dominant features in the phase-averaged spectrum of the polarized magnetic white dwarf HE 1211-1707 correspond with those of Zeeman split neutral helium lines in a mean field of ∼50 MG, while the observed spectral variations point to a non-dipolar field structure.
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/1885/72653
dc.publisherBlackwell Publishing Ltd
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectKeywords: Magnetic fields; Stars: Individual: GD 229; Stars: Individual: HE 1043-0502; Stars: Individual: HE 1211-1707; White dwarfs
dc.titleOn the nature of the magnetic DB white dwarfs
dc.typeJournal article
local.bibliographicCitation.issue1
local.bibliographicCitation.lastpage33
local.bibliographicCitation.startpage29
local.contributor.affiliationWickramasinghe, Dayal, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSchmidt, Gary, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationFerrario, Lilia, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationVennes, Stephane, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidWickramasinghe, Dayal, u7600909
local.contributor.authoruidSchmidt, Gary, t870
local.contributor.authoruidFerrario, Lilia, u8513121
local.contributor.authoruidVennes, Stephane, u9711096
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor010504 - Mathematical Aspects of General Relativity
local.identifier.ariespublicationMigratedxPub3361
local.identifier.citationvolume332
local.identifier.doi10.1046/j.1365-8711.2002.05265.x
local.identifier.scopusID2-s2.0-0041346571
local.type.statusPublished Version

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