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Published May 2012 | Submitted + Published
Journal Article Open

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 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.

Additional Information

© 2012 American Astronomical Society. Received 2012 February 10; accepted 2012 March 7; published 2012 May 4. We gratefully acknowledge the principal investigators responsible for the ACS imaging utilized by the ACS-GC. We also acknowledge the GEMS team for creating and sharing the Galapagos code, without which none of this would have been possible. Work on this paper was carried out at the Jet Propulsion Laboratory and Infrared Processing and Analysis Center (IPAC), California Institute of Technology, under contract with NASA and WISE. J.M.C. is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under award AST-1102525. We thank the anonymous referee for his/her useful suggestions, which have improved this manuscript. This work is based on (GO-10134, GO-09822, GO-09425.01, GO-09583.01, GO-9500) program observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. Work on this paper is based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada–France–Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Science de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada–France–Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. Funding for the DEEP2 Galaxy Redshift Survey has been provided in part by NSF grant AST00-71048 and NASA LTSA grant NNG04GC89G. This work is also based on zCOSMOS observations carried out using the Very Large Telescope at the ESO Paranal Observatory under Program ID: LP175.A-0839. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration.

Attached Files

Published - Griffith2012p18389Astrophys_J_Suppl_S.pdf

Submitted - 1203.1651.pdf


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