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Home Search Quick Search Advanced Fulltext Browse Collections Persons My eDoc Session History Login Name: Password: Documentation Help Support Wiki Direct access to document ID:	Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents ID: 308509.0, MPI für Astronomie / Publikationen_mpia A new Milky Way dwarf satellite in Canes Venatici Authors: Zucker, D. B.; Belokurov, V.; Evans, N. W.; Wilkinson, M. I.; Irwin, M. J.; Sivarani, T.; Hodgkin, S.; Bramich, D. M.; Irwin, J. M.; Gilmore, G.; Willman, B.; Vidrih, S.; Fellhauer, M.; Hewett, P. C.; Beers, T. C.; Bell, E. F.; Grebel, E. K.; Schneider, D. P.; Newberg, H. J.; Wyse, R. F. G.; Rockosi, C. M.; Yanny, B.; Lupton, R.; Smith, J. A.; Barentine, J. C.; Brewington, H.; Brinkmann, J.; Harvanek, M.; Kleinman, S. J.; Krzesinski, J.; Long, D.; Nitta, A.; Snedden, S. A. Date of Publication (YYYY-MM-DD): 2006 Journal Abbrev.: The Astrophysical Journal Volume: 643 Start Page: L103 End Page: L106 Audience: Not Specified Abstract / Description: In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ~220 kpc. Based on the SDSS data, we estimate an absolute magnitude of MV~-7.9, a central surface brightness of mu0,V~28 mag arcsec-2, and a half-light radius of ~8.5 arcmin (~550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found. Free Keywords: Galaxies: Dwarf; galaxies: individual (Canes Venatici); 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... The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.