CANDELS: THE COSMIC ASSEMBLY NEAR-INFRARED DEEP EXTRAGALACTIC LEGACY SURVEY—THE HUBBLE SPACE TELESCOPE OBSERVATIONS, IMAGING DATA PRODUCTS, AND MOSAICS
CANDELS: THE COSMIC ASSEMBLY NEAR-INFRARED DEEP EXTRAGALACTIC LEGACY SURVEY—THE HUBBLE SPACE TELESCOPE OBSERVATIONS, IMAGING DATA PRODUCTS, AND MOSAICS
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DOI：
10.1088/0067-0049/197/2/36
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发表时间：
2011-05
期刊：
影响因子：
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通讯作者：
A. Koekemoer;S. Faber;H. Ferguson;N. Grogin;D. Kocevski;D. Koo;K. Lai;J. Lotz;R. Lucas
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文献类型：
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作者：
A. Koekemoer;S. Faber;H. Ferguson;N. Grogin;D. Kocevski;D. Koo;K. Lai;J. Lotz;R. Lucas
本文介绍了哈勃空间望远镜的成像数据产品和数据处理程序的宇宙组装近红外深河外遗产调查（CANDELS）。这次巡天的目的是记录z = 1.5-8的星系和黑洞的演化，并研究z > 1.5的Ia型超新星。选择了五个首要的多波长天空区域，每个区域都有广泛的多波长观测。主要的CANDELS数据包括在宽视场相机3红外通道（WFC 3/IR）和WFC 3紫外/光学通道中获得的成像，以及沿着高级测量相机（ACS）。CANDELS/Deep调查覆盖了GOODS-N和GOODS-S范围内的125弧分2，而其余部分由CANDELS/Wide调查组成，在GOODS和另外三个领域（扩展Groth带，COSMOS和Ultra-Deep调查）共实现了12800弧分2。我们总结了调查的观测方面的科学目标的动机，并提出了详细的描述，从调查的数据处理程序和产品。我们的数据简化方法利用最新的校准文件和图像组合程序。我们特别注意校正一系列仪器效应，包括ACS的电荷转移效率降低，在维修使命4之后消除ACS数据中存在的电子偏置条带，以及WFC 3/IR中的持久效应和其他伪影。对于每个字段，我们发布单个时期的马赛克，并最终发布包含所有时期组合数据的马赛克，以便于光度变化研究和尽可能深的光度测定。一个更详细的概述的科学目标和观测设计的调查是在一个配套文件。
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.