Detailed analysis of cool WDs in the SDSS : J/ApJS/190/77

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Authors : Kilic M. orcid , Leggett S.K., Tremblay P.-E. (hide) , Leggett S.K., Tremblay P.-E. et..al

VizieR DOI : 10.26093/cds/vizier.21900077
Bibcode : 2010ApJS..190...77K (ADS) (Simbad) (Objects)
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CDS Keywords : Stars, white dwarf; Photometry, ugriz; Photometry, infrared; Spectral types; Surveys
UAT : White dwarf stars, Infrared photometry, Optical astronomy, Broad band photometry, Infrared photometry, Stellar spectral types, Surveys

Observation (OC)

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Inserted into VizieR : 21-Oct-2010
Last modification : 11-Oct-2017

A detailed model atmosphere analysis of cool white dwarfs in the Sloan Digital Sky Survey. (2010)

Keywords : stars atmospheres - stars: evolution - white dwarfs

Abstract:We present optical spectroscopy and near-infrared photometry of 126 cool white dwarfs (WDs) in the Sloan Digital Sky Survey (SDSS DR3). Our sample includes high proper motion targets selected using the SDSS and USNO-B astrometry and a dozen previously known ultracool WD candidates. Our optical spectroscopic observations demonstrate that a clean selection of large samples of cool WDs in the SDSS (and the SkyMapper, Pan-STARRS, and the Large Synoptic Survey Telescope data sets) is possible using a reduced proper motion diagram and a tangential velocity cut-off (depending on the proper motion accuracy) of 30km/s. Our near-infrared observations reveal eight new stars with significant absorption. We use the optical and near-infrared ...(more)
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American Astronomical Society policies
We obtained low-resolution spectroscopy of 98 targets using the 9.2m HET in the queue mode and the Marcario Low Resolution Spectrograph (LRS). Our observations were performed between 2004 October and 2006 July. We obtained JHK photometry of 126 WDs using the Near Infra-Red Imager and Spectrometer (NIRI) on Gemini-North, the 0.8-5.4um medium-resolution spectrograph and imager (SpeX) on the Infrared Telescope Facility (IRTF), and the Wide-Field Camera (WFCAM) on the United Kingdom Infra-Red Telescope (UKIRT). The IRTF observations were obtained on several observing runs between 2004 December and 2006 April. The UKIRT observations (of J0146+1404 and J2239+0018) were performed on UT 2007 September 20.

  • B/wd : Spectroscopically Identified White Dwarfs (McCook+, 2008)
  • II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
  • J/AJ/127/3034 : Proper-motion catalog combining USNO-B and SDSS (Munn+, 2004)
  • J/ApJ/607/426 : Catalog of white dwarfs in SDSS-DR1 (Kleinman+, 2004)
  • J/AJ/131/582 : Cool white dwarfs in the SDSS (Kilic+, 2006)
  • J/ApJS/167/40 : SDSS4 confirmed white dwarfs catalog (Eisenstein+, 2006)
  • J/A+A/448/579 : Sample of confirmed WDs in GSC-II survey (Carollo+, 2006)
  • J/MNRAS/382/515 : SDSS ultracool and halo WD candidates (Vidrih+, 2007)

                


                

                    

                


                

                    

                


                

                    
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