Pegasus Dwarf Spheroidal Galaxy (Peg dSph)
The absence of young and intermediate-age stars in Peg dSph, and another recently-found satellite of the Andromeda Galaxy, the Cassiopeia Dwarf, suggests they have been stripped of star-forming gas by Andromeda's gravitational field. This is surprising in view of their considerable distance from the great spiral and may indicate that Andromeda is more massive than previously thought. The Pegasus Dwarf Spheroidal was discovered in 1999 by various researchers on the Second Palomar Sky Survey.
Related category GALAXIES
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