Second data release of the Hyper Suprime-Cam Subaru Strategic Program

Journal Article · 22 October 2019 · Publications of the Astronomical Society of Japan

DOI: https://doi.org/10.1093/pasj/psz103 · OSTI ID:1571347

Aihara, Hiroaki ^[1]; AlSayyad, Yusra ^[2]; Ando, Makoto ^[3]; Armstrong, Robert ^[4]; Bosch, James  ^[2]; Egami, Eiichi ^[5]; Furusawa, Hisanori ^[6]; Furusawa, Junko ^[6]; Goulding, Andy ^[2]; Harikane, Yuichi ^[7]; Hikage, Chiaki ^[8]; Ho, Paul T. P. ^[9]; Hsieh, Bau-Ching ^[9]; Huang, Song  ^[10]; Ikeda, Hiroyuki ^[6]; Imanishi, Masatoshi ^[6]; Ito, Kei ^[11]; Iwata, Ikuru  ^[12]; Jaelani, Anton T. ^[13]; Kakuma, Ryota ^[14] ; Kawana, Kojiro  ^[15]; Kikuta, Satoshi  ^[11]; Kobayashi, Umi ^[11]; Koike, Michitaro ^[6]; Komiyama, Yutaka ^[12]; Li, Xiangchong  ^[16]; Liang, Yongming  ^[11]; Lin, Yen-Ting ^[9]; Luo, Wentao ^[1]; Lupton, Robert ^[2]; Lust, Nate B. ^[2]; MacArthur, Lauren A. ^[2]; Matsuoka, Yoshiki ^[17]; Mineo, Sogo ^[6]; Miyatake, Hironao ^[18]; Miyazaki, Satoshi ^[6]; More, Surhud ^[19]; Murata, Ryoma ^[1]; Namiki, Shigeru V. ^[11]; Nishizawa, Atsushi J.  ^[20]; Oguri, Masamune ^[21]; Okabe, Nobuhiro  ^[22]; Okamoto, Sakurako ^[23]; Okura, Yuki  ^[6]; Ono, Yoshiaki ^[14]; Onodera, Masato ^[23]; Onoue, Masafusa ^[24]; Osato, Ken  ^[25]; Ouchi, Masami ^[26]; Shibuya, Takatoshi ^[27]; Strauss, Michael A. ^[2]; Sugiyama, Naoshi ^[28]; Suto, Yasushi ^[29]; Takada, Masahiro ^[8]; Takagi, Yuhei ^[23]; Takata, Tadafumi ^[6]; Takita, Satoshi ^[6]; Tanaka, Masayuki ^[12]; Terai, Tsuyoshi ^[23]; Toba, Yoshiki  ^[30]; Uchiyama, Hisakazu ^[6]; Utsumi, Yousuke ^[31]; Wang, Shiang-Yu ^[9]; Wang, Wenting ^[8]; Yamada, Yoshihiko ^[6]

---

1. Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
2. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
3. Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
4. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94551, USA
5. Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
6. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
7. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
8. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
9. Institute of Astronomy and Astrophysics, Academia Sinica, 11F of Astronomy-Mathematics Building, AS/NTU No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C
10. Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
11. Department of Astronomy, School of Science, Graduate University for Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
12. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, Department of Astronomy, School of Science, Graduate University for Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
13. Department of Physics, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
14. Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
15. Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
16. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan, Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
17. Research Center for Space and Cosmic Evolution, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
18. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan, Institute for Advanced Research, Nagoya University, Furocho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan, Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
19. Inter University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune 411007, India
20. Institute for Advanced Research, Nagoya University, Furocho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan, Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
21. Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan, Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
22. Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
23. Subaru Telescope, National Astronomical Observatory of Japan, 650 N A'ohoku Pl, Hilo, HI 96720, USA
24. Max Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
25. Institut d’Astrophysique de Paris, Sorbonne Université, CNRS, UMR 7095, 98 bis boulevard Arago, 75014 Paris, France
26. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan, Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
27. Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan
28. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan, Department of Physics and Astrophysics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
29. Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
30. Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto, Kyoto 606-8502, Japan
31. Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, M/S 29, Menlo Park, CA 94025, USA

This paper presents the second data release of the Hyper Suprime-Cam Subaru Strategic Program, a wide-field optical imaging survey using the 8.2 m Subaru Telescope. We report the release includes data from 174 nights of observation through 2018 January. The Wide layer data cover about 300 deg$^2$ in all five broad-band filters ($grizy$) to the nominal survey exposure (10 min in $gr$ and 20 min in $izy$). Partially observed areas are also included in the release; about 1100 deg$^2$ is observed in at least one filter and one exposure. The median seeing in the i-band is $${0_{.}^{\prime \prime }6}$$, demonstrating the superb image quality of the survey. The Deep (26 deg$^2$) and UltraDeep (4 deg$^2$) data are jointly processed and the UltraDeep-COSMOS field reaches an unprecedented depth of $$i\sim 28$$ at $$5 \, \sigma$$ for point sources. In addition to the broad-band data, narrow-band data are also available in the Deep and UltraDeep fields. This release includes a major update to the processing pipeline, including improved sky subtraction, PSF modeling, object detection, and artifact rejection. The overall data quality has been improved, but this release is not without problems; there is a persistent deblender problem as well as new issues with masks around bright stars. The user is encouraged to review the issue list before utilizing the data for scientific explorations. All the image products as well as catalog products are available for download. The catalogs are also loaded into a database, which provides an easy interface for users to retrieve data for objects of interest. In addition to these main data products, detailed galaxy shape measurements withheld from Public Data Release 1 (PDR1) are now available to the community. The shape catalog is drawn from the S16A internal release, which has a larger area than PDR1 (160 deg$^2$). All products are available at the data release site, https://hsc-release.mtk.nao.ac.jp/.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: Academia Sinica Institute for Astronomy and Astrophysics in Taiwan (ASIAA); Alfred P. Sloan Foundation; Gordon and Betty Moore Foundation; High Energy Accelerator Research Organization (KEK); Japan Science and Technology Agency (JST); Japan Society for the Promotion of Science (JSPS); Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU); Ministry of Education, Culture, Sports, Science and Technology (MEXT); National Aeronautic and Space Administration (NASA); National Astronomical Observatory of Japan (NAOJ); National Science Foundation; Princeton University; Toray Science Foundation; USDOE Office of Science (SC)
• Contributing Organization: Hyper Suprime-Cam (HSC) Collaboration
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1571347
• Journal Information: Publications of the Astronomical Society of Japan, Journal Name: Publications of the Astronomical Society of Japan Journal Issue: 6 Vol. 71; ISSN 0004-6264
• Publisher: Astronomical Society of JapanCopyright Statement
• Country of Publication: Japan
• Language: English