Distances, Metallicities, and Ages of Dwarf Ellliptical Galaxies in the Virgo Cluster from Surface Brightness Fluctuations
We have employed FORS1 and 2 at the Very Large Telescope at the European Southern Observatory (ESO) to acquire deep B and R-band CCD images of 16 dwarf elliptical (dE) galaxies in the direction of the Virgo cluster. For each dwarf, we measure the apparent R-band surface brightness fluctuation (SBF) magnitude m̄R and the (B-R)0 color in a number of fields at different galactocentric distances. From the field-to-field variation of the two quantities, we determine the SBF distance by means of the...[Show more]
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