The Advanced Camera for Surveys General Catalog: Structural Parameters for Approximately Half a Million Galaxies

May 2012 • 2012ApJS..200....9G

Authors • Griffith, Roger L. • Cooper, Michael C. • Newman, Jeffrey A. • Moustakas, Leonidas A. • Stern, Daniel • Comerford, Julia M. • Davis, Marc • Lotz, Jennifer M. • Barden, Marco • Conselice, Christopher J. • Capak, Peter L. • Faber, S. M. • Kirkpatrick, J. Davy • Koekemoer, Anton M. • Koo, David C. • Noeske, Kai G. • Scoville, Nick • Sheth, Kartik • Shopbell, Patrick • Willmer, Christopher N. A. • Weiner, Benjamin

Abstract • 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 Sérsic 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.


IPAC Authors


Davy Kirkpatrick

Senior Scientist