Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program
Abstract
The paper presents the third data release of Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP), a wide-field multi-band imaging survey with the Subaru 8.2m telescope. HSC-SSP has three survey layers (Wide, Deep, and UltraDeep) with different area coverages and depths, designed to address a wide array of astrophysical questions. This third release from HSC-SSP includes data from 278 nights of observing time and covers about 670 square degrees in all five broad-band filters at the full depth (~mag at ) in the Wide layer. If we include partially observed area, the release covers 1,470 square degrees. The Deep and UltraDeep layers have of the originally planned integration times, and are considered done, as we have slightly changed the observing strategy in order to compensate for various time losses. There are a number of updates in the image processing pipeline. Of particular importance is the change in the sky subtraction algorithm; we subtract the sky on small scales before the detection and measurement stages, which has significantly reduced false detections. Thanks to this and other updates, the overall quality of the processed data has improved since the previous release. However, there are limitations in the data (for example, the pipeline is not optimized for crowded fields), and we encourage the user to check the quality assurance plots as well as a list of known issues before exploiting the data. The data release website is https://hsc-release.mtk.nao.ac.jp/.
Cite
@article{arxiv.2108.13045,
title = {Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program},
author = {Hiroaki Aihara and Yusra AlSayyad and Makoto Ando and Robert Armstrong and James Bosch and Eiichi Egami and Hisanori Furusawa and Junko Furusawa and Sumiko Harasawa and Yuichi Harikane and Bau-Ching Hsieh and Hiroyuki Ikeda and Kei Ito and Ikuru Iwata and Tadayuki Kodama and Michitaro Koike and Mitsuru Kokubo and Yutaka Komiyama and Xiangchong Li and Yongming Liang and Yen-Ting Lin and Robert H. Lupton and Nate B Lust and Lauren A. MacArthur and Ken Mawatari and Sogo Mineo and Hironao Miyatake and Satoshi Miyazaki and Surhud More and Takahiro Morishima and Hitoshi Murayama and Kimihiko Nakajima and Fumiaki Nakata and Atsushi J. Nishizawa and Masamune Oguri and Nobuhiro Okabe and Yuki Okura and Yoshiaki Ono and Ken Osato and Masami Ouchi and Yen-Chen Pan and Andrés A. Plazas Malagón and Paul A. Price and Sophie L Reed and Eli S. Rykoff and Takatoshi Shibuya and Mirko Simunovic and Michael A. Strauss and Kanako Sugimori and Yasushi Suto and Nao Suzuki and Masahiro Takada and Yuhei Takagi and Tadafumi Takata and Satoshi Takita and Masayuki Tanaka and Shenli Tang and Dan S. Taranu and Tsuyoshi Terai and Yoshiki Toba and Edwin L. Turner and Hisakazu Uchiyama and Bovornpratch Vijarnwannaluk and Christopher Z Waters and Yoshihiko Yamada and Naoaki Yamamoto and Takuji Yamashita},
journal= {arXiv preprint arXiv:2108.13045},
year = {2022}
}
Comments
25 pages, 19 figures, submitted to PASJ. Data available at https://hsc-release.mtk.nao.ac.jp/