Other
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8719e&link_type=abstract
HST Proposal ID #8719
Other
1
Hst Proposal Id #8719 Cosmology
Scientific paper
Central cluster galaxies are the most massive stellar systems known and have been used as standard candles for many decades. Only recently have central cluster galaxies been recognised to exhibit a wide variety of small scale {<100 pc} features that can only be reliably detected with HST resolution. The most intriguing of these are dust lanes which have been detected in many central cluster galaxies. Dust is not expected to survive long in the hostile cluster environment unless shielded by the ISM of a disk galaxy or very dense clouds of cold gas. WFPC2 snapshot images of a representative subset of the central cluster galaxies from an X-ray selected cluster sample would provide important constraints on the formation and evolution of dust in cluster cores that cannot be obtained from ground-based observations. We were awarded 50 SNAPSHOTS in Cycle 8 for this program of which one has been made so far and another five are scheduled. We wish to continue this project into cycle 9 to ensure that a sample of more than 50 are observed and cover a number of recently discovered systems. This project complements our extensive multi- frequency work on this sample that includes optical spectroscopy and photometry, VLA and X-ray images for the majority of our targets.
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