Other
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5402g&link_type=abstract
HST Proposal ID #5402
Other
Hst Proposal Id #5402 Galaxies &Amp, Clusters Clusters/Lenses
Scientific paper
We propose to observe two X-ray luminous clusters of galaxies MS0440.5+0204 and MS2137.3-2353 which contain multiple gravitationally lensed arc systems. The high resolution of WFPC-2 will allow us to accurately determine the masses for the lensing clusters and to do detailed reconstruction of the lensing sources through lensing models that we have developed. Since the magnification factor along the arcs is greater than 10, a 0.1 arcsec detail will represent a 0.01 arcsec detail in the source, which corresponds to 100 pc at redshift z = 1 (Ho=50 km/s/Mpc). This resolution cannot be obtained by any other means. The HST observations will be complemented by ROSAT HRI and Astro-D observations of the same clusters, and will allow us to compare the properties of the lensing mass as determined from the optical data with the mass of the cluster potential as derived from the X-ray observations. The two methods are independent ways of studying the mass distribution, each one providing strong constraints.
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