Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/17904
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dc.contributor.authorSteele, P. R.-
dc.contributor.authorBurleigh, M. R.-
dc.contributor.authorBarstow, M. A.-
dc.contributor.authorDobbie, P. D.-
dc.date.accessioned2012-10-24T09:04:30Z-
dc.date.available2012-10-24T09:04:30Z-
dc.date.issued2007-12-21-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2007, 382 (4), pp. 1804-1808-
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2381/17904-
dc.identifier.urihttp://mnras.oxfordjournals.org/content/382/4/1804-
dc.description.abstractWe present a near-infrared spectrum of the hot (Teff≈ 55 000 K) hydrogen atmosphere (DA) white dwarf PG 1234+482. We confirm that a very low mass companion is responsible for the previously recognized infrared photometric excess. We compare spectra of M and L dwarfs, combined with an appropriate white dwarf model, to the data to constrain the spectral type of the secondary. We find that uncertainties in the Two-Micron All-Sky Survey HK photometry of the white dwarf prevent us from distinguishing whether the secondary is stellar or substellar, and assign a spectral type of L0±1 (M9–L1).Therefore, this is the hottest and youngest (≈106 yr) DA white dwarf with a possible brown dwarf companion.-
dc.publisherRoyal Astronomical Society (RAS)-
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2007 the authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.-
dc.sourceScopus-
dc.source.urihttp://www.scopus.com/home.url-
dc.titleNear-infrared spectroscopy of the very low mass companion to the hot da white dwarf PG 1234+482-
dc.typeJournal Article-
dc.identifier.doi10.1111/j.1365-2966.2007.12481.x-
dc.identifier.eissn1365-2966-
dc.description.statusPeer-reviewed-
dc.description.versionPublisher Version-
dc.description.irispid39227-
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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