First data release of the Hyper Suprime-Cam Subaru Strategic Program
First data release of the Hyper Suprime-Cam Subaru Strategic Program
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DOI：
10.1093/pasj/psx081
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发表时间：
2018-01-01
影响因子：
2.3
通讯作者：
Yuma, Suraphong
中科院分区：
文献类型：
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作者：
Aihara, Hiroaki;Armstrong, Robert;Yuma, Suraphong
Hyper Suprime-Cam Subaru战略计划（HSC-SSP）是一项三层成像调查，旨在解决当今天文学中一些最重要的悬而未决的问题，包括暗物质和暗能量的性质。该调查已获得斯巴鲁望远镜300个夜晚的观测时间，并于2014年3月开始。本文介绍了HSC-SSP的首次公开数据发布。这个版本包括在第一个1.7年的观测（61.5夜）中获得的数据，宽，深和超深层中的每一个分别覆盖大约108，26和4平方度，直到i的深度，类似于26.4，类似于26.5和类似于27.0等（点源为5 sigma）。所有的层都在五个宽带（灰色）中观察到，并且深层和超深层也在窄带中观察到。我们实现了令人印象深刻的图像质量为0。"" 6在宽层的i波段。我们表明，我们实现了1%-2%的点扩散函数（PSF）测光（均方根）内部和外部（对泛星1），类似于10质量和40质量的内部和外部天体测量精度，分别。通过专门的用户界面和数据库服务器向社区提供校准图像和目录。除了管道产品，我们还提供增值产品，如光度红移和一系列公共光谱红移。所有数据的详细描述都可以在网上找到。数据发布网站为www.example.com。
The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) is a three-layered imaging survey aimed at addressing some of the most important outstanding questions in astronomy today, including the nature of dark matter and dark energy. The survey has been awarded 300 nights of observing time at the Subaru Telescope, and it started in 2014 March. This paper presents the first public data release of HSC-SSP. This release includes data taken in the first 1.7 yr of observations (61.5 nights), and each of the Wide, Deep, and UltraDeep layers covers about 108, 26, and 4 square degrees down to depths of i similar to 26.4, similar to 26.5, and similar to 27.0 mag, respectively (5 sigma for point sources). All the layers are observed in five broad bands (grizy), and the Deep and UltraDeep layers are observed in narrow bands as well. We achieve an impressive image quality of 0.'' 6 in the i band in the Wide layer. We show that we achieve 1%-2% point spread function (PSF) photometry (root mean square) both internally and externally (against Pan-STARRS1), and similar to 10 mas and 40 mas internal and external astrometric accuracy, respectively. Both the calibrated images and catalogs are made available to the community through dedicated user interfaces and database servers. In addition to the pipeline products, we also provide value-added products such as photometric redshifts and a collection of public spectro-scopic redshifts. Detailed descriptions of all the data can be found online. The data release website is https://hsc-release.mtk.nao.ac.jp.