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dc.contributor.authorDobbie, P.D.
dc.contributor.authorNapiwotzki, R.
dc.contributor.authorLodieu, N.
dc.contributor.authorBurleigh, M.R.
dc.contributor.authorBarstow, M.A.
dc.contributor.authorJameson, R.F.
dc.date.accessioned2008-06-27T14:13:01Z
dc.date.available2008-06-27T14:13:01Z
dc.date.issued2007
dc.identifier.citationDobbie , P D , Napiwotzki , R , Lodieu , N , Burleigh , M R , Barstow , M A & Jameson , R F 2007 , The Origins of the Ultramassive White Dwarf GD50 . in In: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372 . Astronomical Society of the Pacific , pp. 79-84 .
dc.identifier.isbn978-1-58381-239-6
dc.identifier.isbn978-1-58381-306-5
dc.identifier.otherPURE: 151660
dc.identifier.otherPURE UUID: 1196a502-9618-4d0e-9fa9-13d878e54f16
dc.identifier.otherdspace: 2299/2138
dc.identifier.urihttp://hdl.handle.net/2299/2138
dc.descriptionOriginal paper can be found at: http://www.astrosociety.org/pubs/cs/361.html Copyright ASP
dc.description.abstractOn the basis of astrometric and spectroscopic data we argue that the ultramassive white dwarf GD 50 is associated with the star formation event that created the Pleiades and is potentially a former cluster member. Its cooling time (∼60Myrs) is consistent with it having evolved essentially as a single star from a M > 6M⊙ progenitor so there appears to be no need to invoke a white dwarf–white dwarf binary merger scenario to account for its existence. Our result may represent the first direct observational evidence that single star evolution can produce white dwarfs with M > 1.1M⊙, as predicted by some stellar evo- lutionary theories. Additionally, our findings may help towards alleviating the difficulties in reconciling the observed number of hot nearby ultramassive white dwarfs with the smaller number predicted by binary evolution models under the assumption that they are the products of white dwarf mergers.en
dc.language.isoeng
dc.publisherAstronomical Society of the Pacific
dc.relation.ispartofIn: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372
dc.titleThe Origins of the Ultramassive White Dwarf GD50en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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