A faint new milky way satellite in bootes

V. Belokurov, D. B. Zucker, N. W. Evans, M. I. Wilkinson, M. J. Irwin, S. Hodgkin, D. M. Bramich, J. M. Irwin, G. Gilmore, B. Willman, S. Vidrih, H. J. Newberg, R. F G Wyse, M. Fellhauer, P. C. Hewett, N. Cole, E. F. Bell, T. C. Beers, C. M. Rockosi, B. YannyE. K. Grebel, D. P. Schneider, R. Lupton, J. C. Barentine, H. Brewington, J. Brinkmann, M. Harvanek, S. J. Kleinman, J. Krzesinski, D. Long, A. Nitta, J. A. Smith, S. A. Snedden

Research output: Contribution to journalArticle

296 Citations (Scopus)

Abstract

We announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of ∼60 kpc. It was found in a systematic search for stellar overdensities in the north Galactic cap using Sloan Digital Sky Survey Data Release 5. The color-magnitude diagram shows a well-defined turnoff, red giant branch, and extended horizontal branch. Its absolute magnitude is Mv∼ -5.8 mag, which makes it one of the faintest galaxies known. The half-light radius is ∼220 pc. The isodensity contours are elongated and have an irregular shape, suggesting that Boo may be a disrupted dwarf spheroidal galaxy.

Original languageEnglish
JournalAstrophysical Journal
Volume647
Issue number2 II
DOIs
Publication statusPublished - 20 Aug 2006
Externally publishedYes

Fingerprint

constellations
color-magnitude diagram
dwarf galaxies
caps
galaxies
radii
diagram

Keywords

  • Galaxies: dwarf
  • Galaxies: individual (Bootes)
  • Local Group

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Belokurov, V., Zucker, D. B., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Hodgkin, S., ... Snedden, S. A. (2006). A faint new milky way satellite in bootes. Astrophysical Journal, 647(2 II). https://doi.org/10.1086/507324

A faint new milky way satellite in bootes. / Belokurov, V.; Zucker, D. B.; Evans, N. W.; Wilkinson, M. I.; Irwin, M. J.; Hodgkin, S.; Bramich, D. M.; Irwin, J. M.; Gilmore, G.; Willman, B.; Vidrih, S.; Newberg, H. J.; Wyse, R. F G; Fellhauer, M.; Hewett, P. C.; Cole, N.; Bell, E. F.; Beers, T. C.; Rockosi, C. M.; Yanny, B.; Grebel, E. K.; Schneider, D. P.; Lupton, R.; Barentine, J. C.; Brewington, H.; Brinkmann, J.; Harvanek, M.; Kleinman, S. J.; Krzesinski, J.; Long, D.; Nitta, A.; Smith, J. A.; Snedden, S. A.

In: Astrophysical Journal, Vol. 647, No. 2 II, 20.08.2006.

Research output: Contribution to journalArticle

Belokurov, V, Zucker, DB, Evans, NW, Wilkinson, MI, Irwin, MJ, Hodgkin, S, Bramich, DM, Irwin, JM, Gilmore, G, Willman, B, Vidrih, S, Newberg, HJ, Wyse, RFG, Fellhauer, M, Hewett, PC, Cole, N, Bell, EF, Beers, TC, Rockosi, CM, Yanny, B, Grebel, EK, Schneider, DP, Lupton, R, Barentine, JC, Brewington, H, Brinkmann, J, Harvanek, M, Kleinman, SJ, Krzesinski, J, Long, D, Nitta, A, Smith, JA & Snedden, SA 2006, 'A faint new milky way satellite in bootes', Astrophysical Journal, vol. 647, no. 2 II. https://doi.org/10.1086/507324
Belokurov V, Zucker DB, Evans NW, Wilkinson MI, Irwin MJ, Hodgkin S et al. A faint new milky way satellite in bootes. Astrophysical Journal. 2006 Aug 20;647(2 II). https://doi.org/10.1086/507324
Belokurov, V. ; Zucker, D. B. ; Evans, N. W. ; Wilkinson, M. I. ; Irwin, M. J. ; Hodgkin, S. ; Bramich, D. M. ; Irwin, J. M. ; Gilmore, G. ; Willman, B. ; Vidrih, S. ; Newberg, H. J. ; Wyse, R. F G ; Fellhauer, M. ; Hewett, P. C. ; Cole, N. ; Bell, E. F. ; Beers, T. C. ; Rockosi, C. M. ; Yanny, B. ; Grebel, E. K. ; Schneider, D. P. ; Lupton, R. ; Barentine, J. C. ; Brewington, H. ; Brinkmann, J. ; Harvanek, M. ; Kleinman, S. J. ; Krzesinski, J. ; Long, D. ; Nitta, A. ; Smith, J. A. ; Snedden, S. A. / A faint new milky way satellite in bootes. In: Astrophysical Journal. 2006 ; Vol. 647, No. 2 II.
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AU - Grebel, E. K.

AU - Schneider, D. P.

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AU - Brewington, H.

AU - Brinkmann, J.

AU - Harvanek, M.

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AU - Krzesinski, J.

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AU - Nitta, A.

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