@article{1095d0b11d764b58a90c5847360694f6,
title = "A new very cool white dwarf discovered by the Sloan Digital Sky Survey",
abstract = "Early data taken during commissioning of the Sloan Digital Sky Survey (SDSS) have resulted in the discovery of a very cool white dwarf. It appears to have stronger collision-induced absorption from molecular hydrogen than any other known white dwarf, suggesting it has a cooler temperature than any other. While its distance is presently unknown, it has a surprisingly small proper motion, making it unlikely to be a halo star. An analysis of white dwarf cooling times suggests that this object may be a low-mass star with a helium core. The SDSS imaging and spectroscopy also recovered LHS 3250, the coolest previously known white dwarf, indicating that the SDSS will be an effective tool for identifying these extreme objects.",
keywords = "Stars: Atmospheres, white dwarfs",
author = "Harris, {Hugh C.} and Hansen, {Brad M.S.} and James Liebert and {Vanden Berk}, {Daniel E.} and Anderson, {Scott F.} and Knapp, {G. R.} and Xiaohui Fan and Bruce Margon and Munn, {Jeffrey A.} and Nichol, {R. C.} and Pier, {Jeffrey R.} and Schneider, {Donald P.} and Smith, {J. Allyn} and Winget, {D. E.} and York, {Donald G.} and Anderson, {John E.} and J. Brinkmann and Scott Burles and Bing Chen and Connolly, {A. J.} and Istv{\'a}n Csabai and Frieman, {Joshua A.} and Gunn, {James E.} and Hennessy, {G. S.} and Hindsley, {Robert B.} and {\v Z}eljko Ivezi{\'c} and Stephen Kent and Lamb, {D. Q.} and Lupton, {Robert H.} and Newberg, {Heidi Jo} and Schlegel, {David J.} and Stephen Smee and Strauss, {Michael A.} and Thakar, {Anirudda R.} and Alan Uomoto and Brian Yanny",
note = "Funding Information: We are grateful to F. Vrba for obtaining the J-magnitude limit of SDSS 1337+00. The SDSS23 is a joint project of the University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Max-Planck-Institut f{\"u}r Astronomie, New Mexico State University, Princeton University, the United States Naval Observatory, and the University of Washington. Apache Point Observatory, site of the SDSS, is operated by the Astrophysical Research Consortium. Funding for the project has been provided by the Alfred P. Sloan Foundation, the SDSS member institutions, the National Aeronautics and Space Administration, the National Science Foundation, the US Department of Energy, Monbusho, and the Max Planck Society. Support for this work was provided by NASA through Hubble Fellowship grant HF-01120.01-99A from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.",
year = "2001",
month = mar,
day = "1",
doi = "10.1086/319146",
language = "English (US)",
volume = "549",
pages = "L109--L113",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 PART 2",
}