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| ID:
308853.0,
MPI für Astronomie / Publikationen_mpia |
| A faint new Milky Way satellite in Bootes |
| Authors: | 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. | | Date of Publication (YYYY-MM-DD): | 2006 | | Journal Abbrev.: | The Astrophysical Journal | | Volume: | 647 | | Start Page: | L111 | | End Page: | L114 | | Audience: | Not Specified | | Abstract / Description: | 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. | | Free Keywords: | Galaxies: Dwarf; galaxies: individual (Bootes); Galaxies: Local Group | | External Publication Status: | published | | Document Type: | Article |
| Communicated by: | N. N. | | Affiliations: | MPI für Astronomie | | Identifiers: | URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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