Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSteele, P. R.-
dc.contributor.authorBurleigh, M. R.-
dc.contributor.authorBarstow, M. A.-
dc.contributor.authorDobbie, P. D.-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2007, 382 (4), pp. 1804-1808-
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.titleNear-infrared spectroscopy of the very low mass companion to the hot da white dwarf PG 1234+482-
dc.typeJournal Article-
dc.description.versionPublisher Version-
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
MNRAS-2007-Steele-1804-8.pdfPublished (publisher PDF) 334.41 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.