Physics
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10395g&link_type=abstract
HST Proposal ID #10395
Physics
Hst Proposal Id #10395 Cosmology
Scientific paper
Galaxies in dense environments are subject to numerous physical processes that leave a lasting impact, yet studies of galaxy evolution to date have been limited to the most luminous galaxies - those least sensitive to environmental influence. We propose to explore the environmental drivers of DWARF galaxy evolution: with a mosaic of 9x9 ACS pointings in F606W we will determine morphologies for 1200 galaxies down to M_V=-14 in the A901/902 supercluster, spanning 3x3 Mpc at z=0.16. The deep ACS data will allow us to probe their surface brightness profiles, shapes, sizes, asymmetry and fine structure such as tidal features. With the addition of extensive existing multi-wavelength data, we will probe the dependence of these important parameters on dark matter content {from weak lensing maps}, the hot intercluster medium {from deep XMM-Newton imaging}, and local galaxy density {from hyper-accurate COMBO-17 photometric redshifts with delta z=0.02 to m_R=24}, thus disentangling the various environmental processes shaping dwarf galaxy evolution. Furthermore, the 8000+ background galaxies at 0.2
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