| Abstract | BVRI CCD photometry of ~2,300 stars in the central 2.2" x 3.5" area of the dwarf elliptical galaxy NGC 205 in the Local Group is presented. The color-magnitude diagrams of NGC 205 show: (1) a blue plume around (B- V) ~ 0.0 mag, extending up to V ~ 19.3 mag (M_v_ ~-5.4 mag); and (2) a strong asymptotic giant branch (AGB) population, the brightest of which reaches I ~ 19.0 mag, 1.5 mag brighter than the tip of the red giant branch. BVRI photometry of three globular clusters (Hubble IV, V, and VI) is also presented. Hubble V is much bluer [(B - V) = 0.37] than other globular clusters. This blue color of Hubble V leads to an estimate of the age, ~300 Myrs. A V luminosity function for the blue stars has been derived: the logarithmic slope of the luminosity function for - 5.7 |
