Computer Science
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8384r&link_type=abstract
HST Proposal ID #8384
Computer Science
Hst Proposal Id #8384 Distant Galaxies
Scientific paper
Field galaxies imaged with WFPC2 have formed a unique and invaluable database. Galaxies parameterized by morphology, magnitude, color, half-light radius, axis-ratio, orientation and location comprise a database used for long term statistical studies in cosmology. We propose to generate a catalog from all suitable WFPC2 exposures taken with broadband filters and split for cosmic-rays, nearly doubling the number of the better quality WFPC2 fields which are currently available in the Medium Deep Survey {MDS} database. We will add homogeneously the primary archival material from Cycles 4- 7 {including HDF south} and future primary and parallel exposures from Cycles 7 and 8. The resulting database with quantitative parameter estimates will be statistically analyzed to model the distribution and evolution of galaxy morphology and weak gravitational lensing. The semi-automated MDS software for WFPC2 data is currently the only pipeline which can handle this large data reduction task. The catalog will be made available via the existing searchable MDS database on the web. The enlarged catalog, surveying a statistically significant area well distributed in the sky to average over expected random fluctuations in narrow fields of view, will also fill the intermediate magnitudes between the brighter Sloan Survey and the fainter HDF fields.
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