Ultraviolet imaging observations of Abell 1795: Further evidence for massive starformation

Abstract

We discuss observations from the Ultraviolet Imaging Telescope of the Abell 1795 cluster of galaxies. We compare the cD galaxy morphology and photometry of these data with those from existing archival and published data. The addition of a far-UV color helps us to construct and test star formation model scenarios for the sources of UV emission. Models of star formation with rates in the range ∼5–20 M⊙ yr−1 indicate that the best fitting models are those with continuous star formation or a recent (∼4 Myr old) burst superimposed on an old population.