Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.1242m&link_type=abstract
HST Proposal ID #1242
Astronomy and Astrophysics
Astrophysics
Hst Proposal Id #1242
Scientific paper
Observations made with the best obtainable ground based angular resolution are insufficient to determine the kinematic structure of the filaments of dominant galaxies in clusters, the physical relation between the dust and ionized gas, and the origin of the filaments. Therefore, follow-up broad band U and B exposures with the FOC will be obtained. The small extent of the filaments (r~ 10") match well with the field of view of the f/48 relay. From published surface photometry we estimate that we can get good photometric accuracy (~2 per cent) within the allotted time. By exploiting the greater than one order of magnitude improvement in angular resolution we will acquire deeper understanding of these important astrophysical issues, especially the interrelation between the observed dust and ionized gas and an implied cooling flow around the galaxies.
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