The Advanced Camera for Surveys General Catalog: Structural Parameters
  for Approximately Half a Million Galaxies
  We present the Advanced Camera for Surveys General Catalog (ACS-GC), a
photometric and morphological database using publicly available data obtained
with the Advanced Camera for Surveys (ACS) instrument on the Hubble Space
Telescope. The goal of the ACS-GC database is to provide a large statistical
sample of galaxies with reliable structural and distance measurements to probe
the evolution of galaxies over a wide range of look-back times. The ACS-GC
includes approximately 470,000 astronomical sources (stars + galaxies) derived
from the AEGIS, COSMOS, GEMS, and GOODS surveys. Galapagos was used to
construct photometric (SExtractor) and morphological (Galfit) catalogs. The
analysis assumes a single S\'ersic model for each object to derive quantitative
structural parameters. We include publicly available redshifts from the DEEP2,
COMBO-17, TKRS, PEARS, ACES, CFHTLS,and zCOSMOS surveys to supply redshifts
(spectroscopic and photometric) for a considerable fraction (~74%) of the
imaging sample. The ACS-GC includes color postage stamps, Galfit residual
images, and photometry, structural parameters, and redshifts combined into a
single catalog.
