First Data Release of the Hyper Suprime-Cam Subaru Strategic Program

Hiroaki Aihara , Robert Armstrong , Steven Bickerton , James Bosch , Jean Coupon , Hisanori Furusawa , Yusuke Hayashi , Hiroyuki Ikeda

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Yukiko Kamata Hiroshi Karoji Satoshi Kawanomoto Michitaro Koike Yutaka Komiyama Robert H. Lupton Sogo Mineo Hironao Miyatake Satoshi Miyazaki Tomoki Morokuma Yoshiyuki Obuchi Yukie Oishi Yuki Okura Paul A. Price Tadafumi Takata Manobu M. Tanaka Masayuki Tanaka Yoko Tanaka Tomohisa Uchida Fumihiro Uraguchi Yousuke Utsumi Shiang-Yu Wang Yoshihiko Yamada Hitomi Yamanoi Naoki Yasuda Nobuo Arimoto Masashi Chiba Francois Finet Hiroki Fujimori Seiji Fujimoto Junko Furusawa Tomotsugu Goto Andy Goulding James E. Gunn Yuichi Harikane Takashi Hattori Masao Hayashi Krzysztof G. Helminiak Ryo Higuchi Chiaki Hikage Paul T.P. Ho Bau-ching Hsieh Kuiyun Huang Song Huang Masatoshi Imanishi Ikuru Iwata Anton T. Jaelani Hung-Yu Jian Nobunari Kashikawa Nobuhiko Katayama Takashi Kojima Akira Konno Shintaro Koshida Haruka Kusakabe Alexie Leauthaud C.-H. Lee Lihwai Lin Yen-Ting Lin Rachel Mandelbaum Yoshiki Matsuoka Elinor Medezinski Shoken Miyama Rieko Momose Anupreeta More Surhud More Shiro Mukae Ryoma Murata Hitoshi Murayama Tohru Nagao Fumiaki Nakata Hiroko Niikura Atsushi J. Nishizawa Masamune Oguri Nobuhiro Okabe Yoshiaki Ono Masato Onodera Masafusa Onoue Masami Ouchi Tae-Soo Pyo Takatoshi Shibuya Kazuhiro Shimasaku Melanie Simet Joshua Speagle David N. Spergel Michael A. Strauss Yuma Sugahara Naoshi Sugiyama Yasushi Suto Nao Suzuki Philip J. Tait Masahiro Takada Tsuyoshi Terai Yoshiki Toba Edwin L. Turner Hisakazu Uchiyama Keiichi Umetsu Yuji Urata Tomonori Usuda Sherry Yeh Suraphong Yuma

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classification 🌌 astro-ph.IM astro-ph.EPastro-ph.GAastro-ph.HEastro-ph.SR

keywords datareleasefirstlayerssubaruachievebandsdark

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The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) is a three-layered imaging survey aimed at addressing some of the most 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 March 2014. This paper presents the first public data release of HSC-SSP. This release includes data taken in the first 1.7 years 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~26.4, ~26.5, and ~27.0 mag, respectively (5sigma 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 arcsec in the i-band in the Wide layer. We show that we achieve 1-2 per cent PSF photometry (rms) both internally and externally (against Pan-STARRS1), and ~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 spectroscopic redshifts. Detailed descriptions of all the data can be found online. The data release website is https://hsc-release.mtk.nao.ac.jp/.

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