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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 358518.0, MPI für Astronomie / Publikationen_mpia
Andromeda X, a new dwarf spheroidal satellite of M31: photometry
Authors:Zucker, D. B.; Kniazev, A. Y.; Martínez-Delgado, D.; Bell, E. F.; Rix, H.-W.; Grebel, E. K.; Holtzman, J. A.; Walterbos, R. A. M.; Rockosi, C. M.; York, D. G.; Barentine, J. C.; Brewington, H.; Brinkmann, J.; Harvanek, M.; Kleinman, S. J.; Krzesinski, J.; Long, D.; Neilsen, E. H.; Nitta, A.; Snedden, S. A.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:The Astrophysical Journal
Start Page:L21
End Page:L24
Audience:Not Specified
Abstract / Description:We report the discovery of Andromeda X, a new dwarf spheroidal satellite of M31, based on stellar photometry from the Sloan Digital Sky Survey. Using follow-up imaging data we have estimated its distance and other physical properties. We find that Andromeda X has a dereddened central surface brightness of muV,0~26.7 mag arcsec-2 and a total apparent magnitude of Vtot~16.1, which at the derived distance modulus, (m-M)0~24.12-24.34, yields an absolute magnitude of MV~-8.1+/-0.5 these values are quite comparable to those of Andromeda IX, a previously discovered low-luminosity M31 satellite. The discoveries of Andromeda X and of numerous other extremely faint satellites around M31 and the Milky Way in the past few years suggest that such objects may be plentiful in the Local Group.
Free Keywords:Galaxies: Dwarf; Galaxies: Evolution; Galaxies: Individual: Name: Andromeda IX; galaxies: individual (Andromeda X); Galaxies: Local Group
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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