WFPC2 observations of two dwarf spheroidal galaxies in the M 81 group
WFPC2 observations of two dwarf spheroidal galaxies in the M 81 group
We have obtained HST WFPC2 and ground-based images of two low surface brightness dwarf spheroidal galaxies in the M 81 group, FM1 and KKH57. Their colour-magnitude diagrams show red giant branches with tips at and , respectively. The derived true distance moduli, and , agree well with the mean distance …