The White Dwarf Luminosity Function from SDSS Imaging Data

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dc.creatorHarris, Hugh C.
dc.creatorMunn, Jeffrey A.
dc.creatorKilic, Mukremin
dc.creatorLiebert, James
dc.creatorWilliams, Kurtis A.
dc.creatorvon Hippel, Ted
dc.creatorLevine, Stephen E.
dc.creatorMonet, David G.
dc.creatorEisenstein, Daniel J.
dc.creatorKleinman, S. J.
dc.creatorMetcalfe, T. S.
dc.creatorNitta, Atsuko
dc.creatorWinget, D. E.
dc.creatorBrinkmann, J.
dc.creatorFukugita, Masataka
dc.creatorKnapp, G. R.
dc.creatorLupton, Robert H.
dc.creatorSmith, J. Allyn
dc.creatorSchneider, Donald P.
dc.date2005-10-29
dc.date.accessioned2026-07-07T11:24:55Z
dc.date.available2026-07-07T11:24:55Z
dc.descriptionA sample of white dwarfs is selected from SDSS DR3 imaging data using their reduced proper motions, based on improved proper motions from SDSS plus USNO-B combined data. Numerous SDSS and followup spectra (Kilic et al. 2005) are used to quantify completeness and contamination of the sample; kinematic models are used to understand and correct for velocity-dependent selection biases. A luminosity function is constructed covering the range 7 < M_bol < 16, and its sensitivity to various assumptions and selection limits is discussed. The white dwarf luminosity function based on 6000 stars is remarkably smooth, and rises nearly monotonically to M_bol = 15.3. It then drops abruptly, although the small number of low-luminosity stars in the sample and their unknown atmospheric composition prevent quantitative conclusions about this decline. Stars are identified that may have high tangential velocities, and a preliminary luminosity function is constructed for them.
dc.descriptionAccepted for AJ (Jan 2006). 35 pages (includes 10 figures)
dc.identifierhttps://arxiv.org/abs/astro-ph/0510820
dc.identifierhttp://arxiv.org/abs/astro-ph/0510820
dc.identifierAstron.J.131:571-581,2006
dc.identifierdoi:10.1086/497966
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195352
dc.subjectAstrophysics
dc.titleThe White Dwarf Luminosity Function from SDSS Imaging Data
dc.typetext

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