NOAO >   Observing Info >   Approved Programs >   2012B-0566

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Proposal Information for 2012B-0566


PI: Colin Slater, University of Michigan, ctslater@umich.edu
Address: Department of Astronomy, 830 Dennison, 501 East University Avenue, Ann Arbor, MI, 48109-1090, USA

CoI: Eric Bell, University of Michigan
CoI: Nicolas Martin, Universite de Strasbourg

Title: Deep follow-up of two new distant satellites of Andromeda

Abstract: The dwarf galaxies of the Local Group are excellent test cases for studying a wide variety of environmental processes in galaxy formation. Two recently-discovered galaxies, Andromeda 28 and 29, are particularly interesting due to their isolation at >360 and >200 kpc from Andromeda, respectively. However, the basic properties of these galaxies are largely uncertain. We propose to determine whether the galaxies have recently formed stars, which will indicate if they are dwarf spheroidal or dwarf irregular galaxies, and will in either case present useful test cases for theories of dwarf galaxy evolution. We will also determine precise distances, luminosities, and sizes of the galaxies, which will further expand the growing census of Local Group dwarfs.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012B-0566

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