[169.02] Looking for the Lowest Luminosity Galaxies in the Local Group

AAS 205th Meeting, 9-13 January 2005
Session 169 Dwarf Galaxies Near and Far and Some Starbursts
Oral, Thursday, January 13, 2005, 2:00-3:30pm, Pacific Salon 1

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[169.02] Looking for the Lowest Luminosity Galaxies in the Local Group

D. B. Zucker (MPIA), A. Y. Kniazev (MPIA/ESO), E. F. Bell, D. Martinez-Delgado (MPIA), J. A. Holtzman (NMSU), H.-W. Rix (MPIA), E. K. Grebel (Basel), C. M. Rockosi (UC Santa Cruz), R. A. M. Walterbos (NMSU)

Based on resolved stellar photometry from the Sloan Digital Sky Survey, we recently reported the discovery of Andromeda IX, a new dwarf spheroidal satellite of M31 that is the lowest luminosity, lowest surface brightness galaxy found to date. We have been carrying out an extensive program of followup observations, using telescopes ranging from the 2.5m NOT to the 8m Gemini North. We present early results of our work to learn more about Andromeda IX, as well as of our search for more ultra-low luminosity satellites of the Andromeda Galaxy.

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