TY - JOUR
T1 - The three-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
AU - Li, Xiangchong
AU - Miyatake, Hironao
AU - Luo, Wentao
AU - More, Surhud
AU - Oguri, Masamune
AU - Hamana, Takashi
AU - Mandelbaum, Rachel
AU - Shirasaki, Masato
AU - Takada, Masahiro
AU - Armstrong, Robert
AU - Kannawadi, Arun
AU - Takita, Satoshi
AU - Miyazaki, Satoshi
AU - Nishizawa, Atsushi J.
AU - Plazas Malagon, Andres A.
AU - Strauss, Michael A.
AU - Tanaka, Masayuki
AU - Yoshida, Naoki
N1 - Funding Information:
The Hyper Suprime-Cam (HSC) collaboration includes the astronomical communities of Japan and Taiwan, and Princeton University. The HSC instrumentation and software were developed by the National Astronomical Observatory of Japan (NAOJ), the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), the University of Tokyo, the High Energy Accelerator Research Organization (KEK), the Academia Sinica Institute for Astronomy and Astrophysics in Taiwan (ASIAA), and Princeton University. Funding was contributed by the FIRST program from Japanese Cabinet Office, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), the Japan Society for the Promotion of Science (JSPS), Japan Science and Technology Agency (JST), the Toray Science Foundation, NAOJ, Kavli IPMU, KEK, ASIAA, and Princeton University.
Funding Information:
XL was supported by Global Science Graduate Course (GSGC) program of the University of Tokyo and JSPS KAKENHI (JP19J22222). This work was supported in part by JSPS KAKENHI Grant Nos. JP18H04350, JP18K13561 JP18K03693, JP19H00677, JP20H00181, JP20H01932, 20H05850, 20H05855, JP20H05856, and by JST AIP Acceleration Research Grant Number JP20317829. HM was supported by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. RM was supported in part by a grant from the Simons Foundation (Simons Investigator in Astrophysics, Award ID 620789).
Publisher Copyright:
© 2022 The Author(s). Published by Oxford University Press on behalf of the Astronomical Society of Japan.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - We present the galaxy shear catalog that will be used for the three-year cosmological weak gravitational lensing analyses using data from the Wide layer of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) Survey. The galaxy shapes are measured from the i-band imaging data acquired from 2014 to 2019 and calibrated with image simulations that resemble the observing conditions of the survey based on training galaxy images from the Hubble Space Telescope in the COSMOS region. The catalog covers an area of 433.48 deg2 of the northern sky, split into six fields. The mean i-band seeing is 0″. 59. With conservative galaxy selection criteria (e.g., i-band magnitude brighter than 24.5), the observed raw galaxy number density is 22.9 arcmin-2, and the effective galaxy number density is 19.9 arcmin-2. The calibration removes the galaxy property-dependent shear estimation bias to the level |δm| < 9 × 10-3. The bias residual δm shows no dependence on redshift in the range 0 < z ≤ 3. We define the requirements for cosmological weak-lensing science for this shear catalog, and quantify potential systematics in the catalog using a series of internal null tests for systematics related to point-spread function modelling and shear estimation. A variety of the null tests are statistically consistent with zero or within requirements, but (i) there is evidence for PSF model shape residual correlations; and (ii) star-galaxy shape correlations reveal additive systematics. Both effects become significant on >1° scales and will require mitigation during the inference of cosmological parameters using cosmic shear measurements.
AB - We present the galaxy shear catalog that will be used for the three-year cosmological weak gravitational lensing analyses using data from the Wide layer of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) Survey. The galaxy shapes are measured from the i-band imaging data acquired from 2014 to 2019 and calibrated with image simulations that resemble the observing conditions of the survey based on training galaxy images from the Hubble Space Telescope in the COSMOS region. The catalog covers an area of 433.48 deg2 of the northern sky, split into six fields. The mean i-band seeing is 0″. 59. With conservative galaxy selection criteria (e.g., i-band magnitude brighter than 24.5), the observed raw galaxy number density is 22.9 arcmin-2, and the effective galaxy number density is 19.9 arcmin-2. The calibration removes the galaxy property-dependent shear estimation bias to the level |δm| < 9 × 10-3. The bias residual δm shows no dependence on redshift in the range 0 < z ≤ 3. We define the requirements for cosmological weak-lensing science for this shear catalog, and quantify potential systematics in the catalog using a series of internal null tests for systematics related to point-spread function modelling and shear estimation. A variety of the null tests are statistically consistent with zero or within requirements, but (i) there is evidence for PSF model shape residual correlations; and (ii) star-galaxy shape correlations reveal additive systematics. Both effects become significant on >1° scales and will require mitigation during the inference of cosmological parameters using cosmic shear measurements.
KW - catalogs
KW - cosmology: miscellaneous
KW - gravitational lensing: weak
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U2 - 10.1093/pasj/psac006
DO - 10.1093/pasj/psac006
M3 - Article
AN - SCOPUS:85128831102
SN - 0004-6264
VL - 74
SP - 421
EP - 459
JO - Publication of the Astronomical Society of Japan
JF - Publication of the Astronomical Society of Japan
IS - 2
ER -