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A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758

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dc.contributor.authorKawka, Adela
dc.contributor.authorBriggs, Gordon
dc.contributor.authorVennes, Stephane
dc.contributor.authorFerrario, Lilia
dc.contributor.authorPaunzen, Ernst
dc.contributor.authorWickramasinghe, Dayal
dc.date.accessioned2021-04-28T00:47:28Z
dc.date.available2021-04-28T00:47:28Z
dc.date.issued2017
dc.date.updated2020-11-23T10:05:34Z
dc.description.abstractWe present an analysis of the close double degenerate NLTT 12758, which is comprised of a magnetic white dwarf with a field of about 3.1 MG and an apparently non-magnetic white dwarf. We measured an orbital period of 1.154 d and found that the magnetic white dwarf is spinning around its axis with a period of 23 min. An analysis of the atmospheric parameters has revealed that the cooling ages of the two white dwarfs are comparable, suggesting that they formed within a short period of time from each other. Our modelling indicates that the non-magnetic white dwarf is more massive (M = 0.83 M⊙) than its magnetic companion (M = 0.69 M⊙) and that the total mass of the system is higher than the Chandrasekhar mass. Although the stars will not come into contact over a Hubble time, when they do come into contact, dynamically unstable mass transfer will take place leading to either an accretion induced collapse into a rapidly spinning neutron star or a Type Ia supernovaen_AU
dc.description.sponsorshipAK and SV acknowledge support from the Grant Agency of the Czech Republic (P209/12/0217 and 15-15943S) and the Ministry of Education of the Czech Republic (LG14013). This work was also supported by the project RVO:67985815 in the Czech Republic. SV acknowledges support from the Mathematical Sciences Institute of the Australian National University. EP acknowledges support by the Ministry of Education of the Czech Republic (grant LG15010). GPB gratefully acknowledges receipt of an Australian Postgraduate Award.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0035-8711en_AU
dc.identifier.urihttp://hdl.handle.net/1885/231069
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/24618..."The Published Version can be archived in a Non-Commercial Institutional Repository" from SHERPA/RoMEO site (as at 28/04/2021). This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record [Kawka, Adela, et al. "A fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758." Monthly Notices of the Royal Astronomical Society 466.1 (2017): 1127-1139.] is available online at: https://dx.doi.org/10.1093/mnras/stw3149en_AU
dc.publisherOxford University Pressen_AU
dc.rights© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Societyen_AU
dc.sourceMonthly Notices of the Royal Astronomical Societyen_AU
dc.subjectbinaries: closeen_AU
dc.subjectstars: individual: NLTT 12758en_AU
dc.subjectstars: magnetic fielden_AU
dc.subjectwhite dwarfsen_AU
dc.titleA fast spinning magnetic white dwarf in the double degenerate, super-Chandrasekhar system NLTT 12758en_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue1en_AU
local.bibliographicCitation.lastpage1139en_AU
local.bibliographicCitation.startpage1127en_AU
local.contributor.affiliationKawka, Adela, Astronomical Institute AV CRen_AU
local.contributor.affiliationBriggs, Gordon, College of Science, ANUen_AU
local.contributor.affiliationVennes, Stephane, Astronomical Institute AV CRen_AU
local.contributor.affiliationFerrario, Lilia, College of Science, ANUen_AU
local.contributor.affiliationPaunzen, Ernst, Masaryk Universityen_AU
local.contributor.affiliationWickramasinghe, Dayal, College of Science, ANUen_AU
local.contributor.authoruidBriggs, Gordon, u4089355en_AU
local.contributor.authoruidFerrario, Lilia, u8513121en_AU
local.contributor.authoruidWickramasinghe, Dayal, u7600909en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systemsen_AU
local.identifier.ariespublicationa383154xPUB5779en_AU
local.identifier.citationvolume466en_AU
local.identifier.doi10.1093/mnras/stw3149en_AU
local.identifier.scopusID2-s2.0-85018239838
local.identifier.thomsonID000398112400078
local.publisher.urlhttp://mnras.oxfordjournals.org/en_AU
local.type.statusPublished Versionen_AU

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