Local Group Dwarf Spheroidal Galaxies as Seen by Spitzer

Details Local Group Dwarf Spheroidal Galaxies as Seen by Spitzer Local Group Dwarf Spheroidal Galaxies as Seen by Spitzer

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441903b&link_type=abstract

American Astronomical Society, AAS Meeting #214, #419.03; Bulletin of the American Astronomical Society, Vol. 41, p.688

Astronomy and Astrophysics

Astronomy

Scientific paper

To complete Spitzer's legacy in the study of the Local Group, we proposed a Cycle 5 program to observe the neglected dwarf spheroidal galaxies with both IRAC and MIPS. Although less obvious Spitzer targets because of their low current star formation rates, dSphs have a range of star formation histories. They are the only nearby environments where metal-poor, low-mass AGB stars are found and as such have the potential to tell us much about this important and poorly-understood aspect of stellar evolution. Here we present the first results from this program, including images and color-magnitude diagrams.

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