The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data

Zlatan Tsvetanov, David A. Golimowski, Wei Zheng, T. R. Geballe, S. K. Leggett, Holland C. Ford, Arthur F. Davidsen, Alan Uomoto, Xiaohui Fan, G. R. Knapp, Michael A. Strauss, J. Brinkmann, D. Q. Lamb, Heidi Jo Newberg, Ron Rechenmacher, Donald P. Schneider, Donald G. York, Robert H. Lupton, Jeffrey R. Pier, James AnnisIstván Csabai, Robert B. Hindsley, Željko Ivesić, Jeffrey A. Munn, Aniruddha R. Thakar, Patrick Waddell

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS J134646.45-003150.4 (hereafter SDSS 1346-00), was selected because of its very red color and stellar appearance. Its spectrum between 0.8 and 2.5 μm is dominated by strong absorption bands of H2O and CH4 and closely mimics those of Gliese 229B and SDSS 162414.37+002915.6 (hereafter SDSS 1624+00), two other known methane brown dwarfs. SDSS 1346-00 is approximately 1.5 mag fainter than Gliese 229B, suggesting that it lies about 11 pc from the Sun. The ratio of flux at 2.1 μm to that at 1.27 μm is larger for SDSS 1346-00 than for Gliese 229B and SDSS 1624+00, which suggests that SDSS 1346-00 has a slightly higher effective temperature than the others. Based on a search area of 130 deg2 and a detection limit of z* = 19.8, we estimate a space density of 0.05 pc-3 for methane brown dwarfs with Teff ∼ 1000 K in the 40 pc3 volume of our search. This estimate is based on small-sample statistics and should be treated with appropriate caution.

Original languageEnglish
JournalAstrophysical Journal
Volume531
Issue number1 PART 2
Publication statusPublished - 1 Mar 2000
Externally publishedYes

Fingerprint

methane
space density
estimates
statistics
absorption spectra
color
temperature

Keywords

  • Stars: low-mass, brown dwarfs
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Tsvetanov, Z., Golimowski, D. A., Zheng, W., Geballe, T. R., Leggett, S. K., Ford, H. C., ... Waddell, P. (2000). The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data. Astrophysical Journal, 531(1 PART 2).

The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data. / Tsvetanov, Zlatan; Golimowski, David A.; Zheng, Wei; Geballe, T. R.; Leggett, S. K.; Ford, Holland C.; Davidsen, Arthur F.; Uomoto, Alan; Fan, Xiaohui; Knapp, G. R.; Strauss, Michael A.; Brinkmann, J.; Lamb, D. Q.; Newberg, Heidi Jo; Rechenmacher, Ron; Schneider, Donald P.; York, Donald G.; Lupton, Robert H.; Pier, Jeffrey R.; Annis, James; Csabai, István; Hindsley, Robert B.; Ivesić, Željko; Munn, Jeffrey A.; Thakar, Aniruddha R.; Waddell, Patrick.

In: Astrophysical Journal, Vol. 531, No. 1 PART 2, 01.03.2000.

Research output: Contribution to journalArticle

Tsvetanov, Z, Golimowski, DA, Zheng, W, Geballe, TR, Leggett, SK, Ford, HC, Davidsen, AF, Uomoto, A, Fan, X, Knapp, GR, Strauss, MA, Brinkmann, J, Lamb, DQ, Newberg, HJ, Rechenmacher, R, Schneider, DP, York, DG, Lupton, RH, Pier, JR, Annis, J, Csabai, I, Hindsley, RB, Ivesić, Ž, Munn, JA, Thakar, AR & Waddell, P 2000, 'The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data', Astrophysical Journal, vol. 531, no. 1 PART 2.
Tsvetanov Z, Golimowski DA, Zheng W, Geballe TR, Leggett SK, Ford HC et al. The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data. Astrophysical Journal. 2000 Mar 1;531(1 PART 2).
Tsvetanov, Zlatan ; Golimowski, David A. ; Zheng, Wei ; Geballe, T. R. ; Leggett, S. K. ; Ford, Holland C. ; Davidsen, Arthur F. ; Uomoto, Alan ; Fan, Xiaohui ; Knapp, G. R. ; Strauss, Michael A. ; Brinkmann, J. ; Lamb, D. Q. ; Newberg, Heidi Jo ; Rechenmacher, Ron ; Schneider, Donald P. ; York, Donald G. ; Lupton, Robert H. ; Pier, Jeffrey R. ; Annis, James ; Csabai, István ; Hindsley, Robert B. ; Ivesić, Željko ; Munn, Jeffrey A. ; Thakar, Aniruddha R. ; Waddell, Patrick. / The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data. In: Astrophysical Journal. 2000 ; Vol. 531, No. 1 PART 2.
@article{6d837bcd071e4e898b1ab05101a8c807,
title = "The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data",
abstract = "We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS J134646.45-003150.4 (hereafter SDSS 1346-00), was selected because of its very red color and stellar appearance. Its spectrum between 0.8 and 2.5 μm is dominated by strong absorption bands of H2O and CH4 and closely mimics those of Gliese 229B and SDSS 162414.37+002915.6 (hereafter SDSS 1624+00), two other known methane brown dwarfs. SDSS 1346-00 is approximately 1.5 mag fainter than Gliese 229B, suggesting that it lies about 11 pc from the Sun. The ratio of flux at 2.1 μm to that at 1.27 μm is larger for SDSS 1346-00 than for Gliese 229B and SDSS 1624+00, which suggests that SDSS 1346-00 has a slightly higher effective temperature than the others. Based on a search area of 130 deg2 and a detection limit of z* = 19.8, we estimate a space density of 0.05 pc-3 for methane brown dwarfs with Teff ∼ 1000 K in the 40 pc3 volume of our search. This estimate is based on small-sample statistics and should be treated with appropriate caution.",
keywords = "Stars: low-mass, brown dwarfs, Surveys",
author = "Zlatan Tsvetanov and Golimowski, {David A.} and Wei Zheng and Geballe, {T. R.} and Leggett, {S. K.} and Ford, {Holland C.} and Davidsen, {Arthur F.} and Alan Uomoto and Xiaohui Fan and Knapp, {G. R.} and Strauss, {Michael A.} and J. Brinkmann and Lamb, {D. Q.} and Newberg, {Heidi Jo} and Ron Rechenmacher and Schneider, {Donald P.} and York, {Donald G.} and Lupton, {Robert H.} and Pier, {Jeffrey R.} and James Annis and Istv{\'a}n Csabai and Hindsley, {Robert B.} and Željko Ivesić and Munn, {Jeffrey A.} and Thakar, {Aniruddha R.} and Patrick Waddell",
year = "2000",
month = "3",
day = "1",
language = "English",
volume = "531",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 PART 2",

}

TY - JOUR

T1 - The discovery of a second field methane brown dwarf from sloan digital sky survey commissioning data

AU - Tsvetanov, Zlatan

AU - Golimowski, David A.

AU - Zheng, Wei

AU - Geballe, T. R.

AU - Leggett, S. K.

AU - Ford, Holland C.

AU - Davidsen, Arthur F.

AU - Uomoto, Alan

AU - Fan, Xiaohui

AU - Knapp, G. R.

AU - Strauss, Michael A.

AU - Brinkmann, J.

AU - Lamb, D. Q.

AU - Newberg, Heidi Jo

AU - Rechenmacher, Ron

AU - Schneider, Donald P.

AU - York, Donald G.

AU - Lupton, Robert H.

AU - Pier, Jeffrey R.

AU - Annis, James

AU - Csabai, István

AU - Hindsley, Robert B.

AU - Ivesić, Željko

AU - Munn, Jeffrey A.

AU - Thakar, Aniruddha R.

AU - Waddell, Patrick

PY - 2000/3/1

Y1 - 2000/3/1

N2 - We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS J134646.45-003150.4 (hereafter SDSS 1346-00), was selected because of its very red color and stellar appearance. Its spectrum between 0.8 and 2.5 μm is dominated by strong absorption bands of H2O and CH4 and closely mimics those of Gliese 229B and SDSS 162414.37+002915.6 (hereafter SDSS 1624+00), two other known methane brown dwarfs. SDSS 1346-00 is approximately 1.5 mag fainter than Gliese 229B, suggesting that it lies about 11 pc from the Sun. The ratio of flux at 2.1 μm to that at 1.27 μm is larger for SDSS 1346-00 than for Gliese 229B and SDSS 1624+00, which suggests that SDSS 1346-00 has a slightly higher effective temperature than the others. Based on a search area of 130 deg2 and a detection limit of z* = 19.8, we estimate a space density of 0.05 pc-3 for methane brown dwarfs with Teff ∼ 1000 K in the 40 pc3 volume of our search. This estimate is based on small-sample statistics and should be treated with appropriate caution.

AB - We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS J134646.45-003150.4 (hereafter SDSS 1346-00), was selected because of its very red color and stellar appearance. Its spectrum between 0.8 and 2.5 μm is dominated by strong absorption bands of H2O and CH4 and closely mimics those of Gliese 229B and SDSS 162414.37+002915.6 (hereafter SDSS 1624+00), two other known methane brown dwarfs. SDSS 1346-00 is approximately 1.5 mag fainter than Gliese 229B, suggesting that it lies about 11 pc from the Sun. The ratio of flux at 2.1 μm to that at 1.27 μm is larger for SDSS 1346-00 than for Gliese 229B and SDSS 1624+00, which suggests that SDSS 1346-00 has a slightly higher effective temperature than the others. Based on a search area of 130 deg2 and a detection limit of z* = 19.8, we estimate a space density of 0.05 pc-3 for methane brown dwarfs with Teff ∼ 1000 K in the 40 pc3 volume of our search. This estimate is based on small-sample statistics and should be treated with appropriate caution.

KW - Stars: low-mass, brown dwarfs

KW - Surveys

UR - http://www.scopus.com/inward/record.url?scp=17444437494&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17444437494&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:17444437494

VL - 531

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 PART 2

ER -