Andromeda IX: A New Dwarf Spheroidal Satellite of M31
Andromeda IX: A New Dwarf Spheroidal Satellite of M31
We report the discovery of a new dwarf spheroidal satellite of M31, Andromeda IX, based on resolved stellar photometry from the Sloan Digital Sky Survey (SDSS). Using both SDSS and public archival data we have estimated its distance and other physical properties, and compared these to the properties of a …