L dwarfs found in sloan digital sky survey commissioning imaging data

Xiaohui Fan, G. R. Knapp, Michael A. Strauss, James E. Gunn, Robert H. Lupton, Željko Ivezić, Constance M. Rockosi, Brian Yanny, Stephen Kent, Donald P. Schneider, J. Davy Kirkpatrick, James Annis, Steven Bastian, Eileen Berman, J. Brinkmann, István Csabai, Glenn R. Federwitz, Masataka Fukugita, Vijay K. Gurbani, G. S. Hennessy & 19 others Robert B. Hindsley, Takashi Ichikawa, D. Q. Lamb, Carl Lindenmeyer, P. M. Mantsch, Timothy A. Mckay, Jeffrey A. Munn, Thomas Nash, Sadanori Okamura, A. George Pauls, Jeffrey R. Pier, Ron Rechenmacher, Claudio H. Rivetta, Gary Sergey, Chris Stoughton, Alexander S. Szalay, Gyula P. Szokoly, Douglas L. Tucker, Donald G. York

Research output: Contribution to journalArticle

102 Citations (Scopus)

Abstract

This paper describes the discovery of seven dwarf objects of spectral type L (objects cooler than the latest M dwarfs) in commissioning imaging data taken by the Sloan Digital Sky Survey (SDSS). Low-resolution spectroscopy shows that they have spectral types from L0 to L8. Comparison of the SDSS and the Two Micron All Sky Survey (2MASS) photometry for several of these objects indicates the presence of significant opacity at optical wavelengths. This comparison also demonstrates the high astrometric accuracy (better than 1″ for these faint sources) of both surveys. The L dwarfs are shown to occupy a distinctive region of color-color space as measured in the SDSS filters, which should enables their identification in a straightforward way. This should lead eventually to a complete sample of many hundreds of these low-mass objects, or about 1 per 15 deg2 to i′ ≈ 20, in the complete SDSS data set.

Original languageEnglish (US)
Pages (from-to)928-935
Number of pages8
JournalAstronomical Journal
Volume119
Issue number2
StatePublished - Feb 2000
Externally publishedYes

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color
opacity
coolers
photometry
filters
spectroscopy
filter
wavelength
wavelengths
comparison

Keywords

  • Stars: low-mass, brown dwarfs
  • Surveys

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Fan, X., Knapp, G. R., Strauss, M. A., Gunn, J. E., Lupton, R. H., Ivezić, Ž., ... York, D. G. (2000). L dwarfs found in sloan digital sky survey commissioning imaging data. Astronomical Journal, 119(2), 928-935.

L dwarfs found in sloan digital sky survey commissioning imaging data. / Fan, Xiaohui; Knapp, G. R.; Strauss, Michael A.; Gunn, James E.; Lupton, Robert H.; Ivezić, Željko; Rockosi, Constance M.; Yanny, Brian; Kent, Stephen; Schneider, Donald P.; Kirkpatrick, J. Davy; Annis, James; Bastian, Steven; Berman, Eileen; Brinkmann, J.; Csabai, István; Federwitz, Glenn R.; Fukugita, Masataka; Gurbani, Vijay K.; Hennessy, G. S.; Hindsley, Robert B.; Ichikawa, Takashi; Lamb, D. Q.; Lindenmeyer, Carl; Mantsch, P. M.; Mckay, Timothy A.; Munn, Jeffrey A.; Nash, Thomas; Okamura, Sadanori; Pauls, A. George; Pier, Jeffrey R.; Rechenmacher, Ron; Rivetta, Claudio H.; Sergey, Gary; Stoughton, Chris; Szalay, Alexander S.; Szokoly, Gyula P.; Tucker, Douglas L.; York, Donald G.

In: Astronomical Journal, Vol. 119, No. 2, 02.2000, p. 928-935.

Research output: Contribution to journalArticle

Fan, X, Knapp, GR, Strauss, MA, Gunn, JE, Lupton, RH, Ivezić, Ž, Rockosi, CM, Yanny, B, Kent, S, Schneider, DP, Kirkpatrick, JD, Annis, J, Bastian, S, Berman, E, Brinkmann, J, Csabai, I, Federwitz, GR, Fukugita, M, Gurbani, VK, Hennessy, GS, Hindsley, RB, Ichikawa, T, Lamb, DQ, Lindenmeyer, C, Mantsch, PM, Mckay, TA, Munn, JA, Nash, T, Okamura, S, Pauls, AG, Pier, JR, Rechenmacher, R, Rivetta, CH, Sergey, G, Stoughton, C, Szalay, AS, Szokoly, GP, Tucker, DL & York, DG 2000, 'L dwarfs found in sloan digital sky survey commissioning imaging data', Astronomical Journal, vol. 119, no. 2, pp. 928-935.
Fan X, Knapp GR, Strauss MA, Gunn JE, Lupton RH, Ivezić Ž et al. L dwarfs found in sloan digital sky survey commissioning imaging data. Astronomical Journal. 2000 Feb;119(2):928-935.
Fan, Xiaohui ; Knapp, G. R. ; Strauss, Michael A. ; Gunn, James E. ; Lupton, Robert H. ; Ivezić, Željko ; Rockosi, Constance M. ; Yanny, Brian ; Kent, Stephen ; Schneider, Donald P. ; Kirkpatrick, J. Davy ; Annis, James ; Bastian, Steven ; Berman, Eileen ; Brinkmann, J. ; Csabai, István ; Federwitz, Glenn R. ; Fukugita, Masataka ; Gurbani, Vijay K. ; Hennessy, G. S. ; Hindsley, Robert B. ; Ichikawa, Takashi ; Lamb, D. Q. ; Lindenmeyer, Carl ; Mantsch, P. M. ; Mckay, Timothy A. ; Munn, Jeffrey A. ; Nash, Thomas ; Okamura, Sadanori ; Pauls, A. George ; Pier, Jeffrey R. ; Rechenmacher, Ron ; Rivetta, Claudio H. ; Sergey, Gary ; Stoughton, Chris ; Szalay, Alexander S. ; Szokoly, Gyula P. ; Tucker, Douglas L. ; York, Donald G. / L dwarfs found in sloan digital sky survey commissioning imaging data. In: Astronomical Journal. 2000 ; Vol. 119, No. 2. pp. 928-935.
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AU - Knapp, G. R.

AU - Strauss, Michael A.

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AU - Lupton, Robert H.

AU - Ivezić, Željko

AU - Rockosi, Constance M.

AU - Yanny, Brian

AU - Kent, Stephen

AU - Schneider, Donald P.

AU - Kirkpatrick, J. Davy

AU - Annis, James

AU - Bastian, Steven

AU - Berman, Eileen

AU - Brinkmann, J.

AU - Csabai, István

AU - Federwitz, Glenn R.

AU - Fukugita, Masataka

AU - Gurbani, Vijay K.

AU - Hennessy, G. S.

AU - Hindsley, Robert B.

AU - Ichikawa, Takashi

AU - Lamb, D. Q.

AU - Lindenmeyer, Carl

AU - Mantsch, P. M.

AU - Mckay, Timothy A.

AU - Munn, Jeffrey A.

AU - Nash, Thomas

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AU - Pauls, A. George

AU - Pier, Jeffrey R.

AU - Rechenmacher, Ron

AU - Rivetta, Claudio H.

AU - Sergey, Gary

AU - Stoughton, Chris

AU - Szalay, Alexander S.

AU - Szokoly, Gyula P.

AU - Tucker, Douglas L.

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