期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷 71, 期 6, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/pasj/psz103
关键词
astronomical databases: miscellaneous; cosmology: observations; galaxies: general; surveys
资金
- Hyper Suprime-Cam (HSC) collaboration includes the astronomical communities of Japan
- Princeton University
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)
- University of Tokyo
- High Energy Accelerator Research Organization (KEK)
- FIRST program from the Japanese Cabinet Office
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Japan Society for the Promotion of Science (JSPS)
- Japan Science and Technology Agency (JST)
- Toray Science Foundation
- Max-Planck Society
- Max Planck Institute for Extraterrestrial Physics
- Queen's University Belfast
- National Central University of Taiwan
- Space Telescope Science Institute
- National Aeronautics and Space Administration [NNX08AR22G]
- NASA Science Mission Directorate
- National Science Foundation
- University of Maryland, Eotvos Lorand University (ELTE)
- Los Alamos National Laboratory
- Gordon and Betty Moore Foundation [LP175.A-0839]
- 3D-HST Treasury Program [GO 12177, 12328]
- NASA [Spitzer-1356708, 08ADP08-0019, NNX09AC95G]
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University, University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA ParticipationGroup
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University
- Pennsylvania State University, University of Portsmouth
- Spanish Participation Group, University of Tokyo, University of Utah
- Yale University - STFC (UK)
- ARC (Australia)
- AAO
- NSF [AST-0808133, AST0807630, AST-0806732]
- NASA LTSA grant [NNG04GC89G]
- MEXT [15H05887, 15H05892, 15H05893]
- NASA [NNX09AC95G, 120486] Funding Source: Federal RePORTER
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. 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 (grizO 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.'' 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 similar to 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 516A 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.acjpt.
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