New UltraCool and Halo White Dwarf Candidates in SDSS Stripe 82

Simple item page
dc.creatorVidrih, S.
dc.creatorBramich, D. M.
dc.creatorHewett, P. C.
dc.creatorEvans, N. W.
dc.creatorGilmore, G.
dc.creatorHodgkin, S.
dc.creatorSmith, M.
dc.creatorWyrzykowski, L.
dc.creatorBelokurov, V.
dc.creatorFellhauer, M.
dc.creatorIrwin, M. J.
dc.creatorMcMahon, R. G.
dc.creatorZucker, D.
dc.creatorMunn, J. A.
dc.creatorLin, H.
dc.creatorMiknaitis, G.
dc.creatorHarris, H. C.
dc.creatorLupton, R. H.
dc.creatorSchneider, D. P.
dc.date2007-09-07
dc.date2007-11-19
dc.date.accessioned2026-07-07T11:53:06Z
dc.date.available2026-07-07T11:53:06Z
dc.descriptionA 2.5 x 100 degree region along the celestial equator (Stripe 82) has been imaged repeatedly from 1998 to 2005 by the Sloan Digital Sky Survey. A new catalogue of ~4 million light-motion curves, together with over 200 derived statistical quantities, for objects in Stripe 82 brighter than r~21.5 has been constructed by combining these data by Bramich et al. (2007). This catalogue is at present the deepest catalogue of its kind. Extracting the ~130000 objects with highest signal-to-noise ratio proper motions, we build a reduced proper motion diagram to illustrate the scientific promise of the catalogue. In this diagram disk and halo subdwarfs are well-separated from the cool white dwarf sequence. Our sample of 1049 cool white dwarf candidates includes at least 8 and possibly 21 new ultracool H-rich white dwarfs (T_eff < 4000K) and one new ultracool He-rich white dwarf candidate identified from their SDSS optical and UKIDSS infrared photometry. At least 10 new halo white dwarfs are also identified from their kinematics.
dc.description10 pages, 5 figures, published in MNRAS, minor text changes, final version
dc.identifierhttps://arxiv.org/abs/0709.1131
dc.identifierhttp://arxiv.org/abs/0709.1131
dc.identifierMon.Not.Roy.Astron.Soc.382:515-525,2007
dc.identifierdoi:10.1111/j.1365-2966.2007.12429.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204419
dc.subjectAstrophysics
dc.titleNew UltraCool and Halo White Dwarf Candidates in SDSS Stripe 82
dc.typetext

Files

Collections

arXiv