NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T15:37:51 PDT
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For refcode 2007ApJ...659L..21Z:
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Copyright by American Astronomical Society. Reproduced by permission
2007ApJ...659L..21Z Andromeda X, a New Dwarf Spheroidal Satellite of M31: Photometry Daniel B. Zucker, Alexei Y. Kniazev, David Martinez-Delgado, Eric F. Bell, Hans-Walter Rix, Eva K. Grebel, Jon A. Holtzman, Rene A. M. Walterbos, Constance M. Rockosi, Donald G. York, J. C. Barentine, Howard Brewington, J. Brinkmann, Michael Harvanek, S. J. Kleinman, Jurek Krzesinski, Dan Long, Eric H. Neilsen, Jr., Atsuko Nitta, and Stephanie A. Snedden Abstract. 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 {mu}_V,0_~26.7 mag arcsec^-2^ and a total apparent magnitude of V_tot_~16.1, which at the derived distance modulus, (m-M)_0_~24.12 -- 24.34, yields an absolute magnitude of M_V_~-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. Key words: Galaxies: Dwarf, Galaxies: Evolution, Galaxies: Individual: Name: Andromeda IX, galaxies: individual (Andromeda X), Galaxies: Local Group
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