December
2011
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2011ApJS..197...36K
Authors
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Koekemoer, Anton M.
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Faber, S. M.
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Ferguson, Henry C.
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Grogin, Norman A.
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Kocevski, Dale D.
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Koo, David C.
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Lai, Kamson
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Lotz, Jennifer M.
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Lucas, Ray A.
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McGrath, Elizabeth J.
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Ogaz, Sara
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Rajan, Abhijith
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Riess, Adam G.
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Rodney, Steve A.
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Strolger, Louis
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Casertano, Stefano
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Castellano, Marco
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Dahlen, Tomas
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Dickinson, Mark
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Dolch, Timothy
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Fontana, Adriano
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Giavalisco, Mauro
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Grazian, Andrea
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Guo, Yicheng
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Hathi, Nimish P.
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Huang, Kuang-Han
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van der Wel, Arjen
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Yan, Hao-Jing
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Acquaviva, Viviana
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Alexander, David M.
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Almaini, Omar
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Ashby, Matthew L. N.
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Barden, Marco
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Bell, Eric F.
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Bournaud, Frédéric
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Brown, Thomas M.
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Caputi, Karina I.
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Cassata, Paolo
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Challis, Peter J.
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Chary, Ranga-Ram
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Cheung, Edmond
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Cirasuolo, Michele
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Conselice, Christopher J.
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Roshan Cooray, Asantha
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Croton, Darren J.
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Daddi, Emanuele
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Davé, Romeel
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de Mello, Duilia F.
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de Ravel, Loic
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Dekel, Avishai
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Donley, Jennifer L.
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Dunlop, James S.
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Dutton, Aaron A.
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Elbaz, David
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Fazio, Giovanni G.
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Filippenko, Alexei V.
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Finkelstein, Steven L.
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Frazer, Chris
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Gardner, Jonathan P.
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Garnavich, Peter M.
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Gawiser, Eric
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Gruetzbauch, Ruth
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Hartley, Will G.
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Häussler, Boris
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Herrington, Jessica
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Hopkins, Philip F.
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Huang, Jia-Sheng
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Jha, Saurabh W.
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Johnson, Andrew
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Kartaltepe, Jeyhan S.
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Khostovan, Ali A.
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Kirshner, Robert P.
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Lani, Caterina
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Lee, Kyoung-Soo
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Li, Weidong
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Madau, Piero
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McCarthy, Patrick J.
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McIntosh, Daniel H.
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McLure, Ross J.
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McPartland, Conor
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Mobasher, Bahram
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Moreira, Heidi
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Mortlock, Alice
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Moustakas, Leonidas A.
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Mozena, Mark
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Nandra, Kirpal
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Newman, Jeffrey A.
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Nielsen, Jennifer L.
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Niemi, Sami
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Noeske, Kai G.
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Papovich, Casey J.
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Pentericci, Laura
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Pope, Alexandra
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Primack, Joel R.
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Ravindranath, Swara
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Reddy, Naveen A.
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Renzini, Alvio
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Rix, Hans-Walter
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Robaina, Aday R.
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Rosario, David J.
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Rosati, Piero
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Salimbeni, Sara
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Scarlata, Claudia
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Siana, Brian
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Simard, Luc
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Smidt, Joseph
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Snyder, Diana
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Somerville, Rachel S.
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Spinrad, Hyron
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Straughn, Amber N.
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Telford, Olivia
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Teplitz, Harry I.
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Trump, Jonathan R.
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Vargas, Carlos
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Villforth, Carolin
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Wagner, Cory R.
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Wandro, Pat
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Wechsler, Risa H.
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Weiner, Benjamin J.
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Wiklind, Tommy
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Wild, Vivienne
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Wilson, Grant
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Wuyts, Stijn
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Yun, Min S.
Abstract
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This paper describes the Hubble Space Telescope imaging data products and data reduction procedures for the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS). This survey is designed to document the evolution of galaxies and black holes at z ≈ 1.5-8, and to study Type Ia supernovae at z > 1.5. Five premier multi-wavelength sky regions are selected, each with extensive multi-wavelength observations. The primary CANDELS data consist of imaging obtained in the Wide Field Camera 3 infrared channel (WFC3/IR) and the WFC3 ultraviolet/optical channel, along with the Advanced Camera for Surveys (ACS). The CANDELS/Deep survey covers ~125 arcmin2 within GOODS-N and GOODS-S, while the remainder consists of the CANDELS/Wide survey, achieving a total of ~800 arcmin2 across GOODS and three additional fields (Extended Groth Strip, COSMOS, and Ultra-Deep Survey). We summarize the observational aspects of the survey as motivated by the scientific goals and present a detailed description of the data reduction procedures and products from the survey. Our data reduction methods utilize the most up-to-date calibration files and image combination procedures. We have paid special attention to correcting a range of instrumental effects, including charge transfer efficiency degradation for ACS, removal of electronic bias-striping present in ACS data after Servicing Mission 4, and persistence effects and other artifacts in WFC3/IR. For each field, we release mosaics for individual epochs and eventual mosaics containing data from all epochs combined, to facilitate photometric variability studies and the deepest possible photometry. A more detailed overview of the science goals and observational design of the survey are presented in a companion paper.
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