TY - JOUR
T1 - A 16 deg2 survey of emission-line galaxies at z < 1.5 in HSC-SSP Public Data Release 1
AU - Hayashi, Masao
AU - Tanaka, Masayuki
AU - Shimakawa, Rhythm
AU - Furusawa, Hisanori
AU - Momose, Rieko
AU - Koyama, Yusei
AU - Silverman, John D.
AU - Kodama, Tadayuki
AU - Komiyama, Yutaka
AU - Leauthaud, Alexie
AU - Lin, Yen Ting
AU - Miyazaki, Satoshi
AU - Nagao, Tohru
AU - Nishizawa, Atsushi J.
AU - Ouchi, Masami
AU - Shibuya, Takatoshi
AU - Tadaki, Ken Ichi
AU - Yabe, Kiyoto
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 the Japanese Cabinet Office, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), the Japan Society for the Promotion of Science (JSPS), the Japan Science and Technology Agency (JST), the Toray Science Foundation, NAOJ, Kavli IPMU, KEK, ASIAA, and Princeton University. This paper makes use of software developed for the Large Synoptic Survey Telescope. We thank the LSST Project for making their code available as free software.5 The Pan-STARRS1 Surveys (PS1) have been made possible through contributions of the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max-Planck Society and its participating institutes, the Max Planck Institute for Astronomy, Heidelberg and the Max Planck Institute for Extraterrestrial Physics, Garching, The Johns Hopkins University, Durham University, the University of Edinburgh, Queen’s University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Incorporated, the National Central University of Taiwan, the Space Telescope Science Institute, the National Aeronautics and Space Administration under Grant No. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate, the National Science Foundation under Grant No. AST-1238877, the University of Maryland, Eotvos Lorand University (ELTE), and the Los Alamos National Laboratory.
Funding Information:
We thank the anonymous referee for providing constructive comments. MH acknowledges the financial support of JSPS Grant-in-Aid for Young Scientists (A) Grant Number JP26707006. This work is supported by the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan, and KAKENHI (15H02064) Grant-in-Aid for Scientific Research (A) through the Japan Society for the Promotion of Science (JSPS).
Funding Information:
This work is based on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. The NB816 filter was supported by Ehime University and the NB921 filter was supported by KAKENHI (23244025) Grant-in-Aid for Scientific Research (A) through the JSPS.
Publisher Copyright:
© The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We present initial results from the Subaru Strategic Program (SSP) with Hyper Suprime- Cam (HSC) on a comprehensive survey of emission-line galaxies at z < 1.5 based on narrowband imaging. The first Public Data Release provides us with data from two narrowband filters, specifically NB816 and NB921 over 5.7 deg2 and 16.2 deg2 respectively. The 5 σ limiting magnitudes are 25.2mag (UltraDeep layer, 1.4 deg2) and 24.8mag (Deep layer, 4.3 deg2) for NB816, and 25.1mag (UltraDeep, 2.9 deg2) and 24.6-24.8mag (Deep, 13.3 deg2) for NB921. The wide-field imaging allows us to construct unprecedentedly large samples of 8054 Hα emitters at z ≈ 0.25 and 0.40, 8656 [O III] emitters at z ≈ 0.63 and 0.84, and 16877 [O II] emitters at z ≈ 1.19 and 1.47.We map the cosmic web on scales out to about 50 comoving Mpc that includes galaxy clusters, identified by red sequence galaxies, located at the intersection of filamentary structures of star-forming galaxies. The luminosity functions of emission-line galaxies are measured with precision and are consistent with published studies. The wide field coverage of the data enables us to measure the luminosity functions up to brighter luminosities than previous studies. The comparison of the luminosity functions between the different HSC-SSP fields suggests that a survey volume of >5 × 105 Mpc3 is essential to overcome cosmic variance. Since the current data have not reached the full depth expected for the HSC-SSP, the color cut in i - NB816 or z - NB921 induces a bias towards star-forming galaxies with large equivalent widths, primarily seen in the stellar mass functions for the Hα emitters at z ≈ 0.25-0.40. Even so, the emission-line galaxies clearly cover a wide range of luminosity, stellar mass, and environment, thus demonstrating the usefulness of the narrowband data from the HSC-SSP for investigating star-forming galaxies at z < 1.5.
AB - We present initial results from the Subaru Strategic Program (SSP) with Hyper Suprime- Cam (HSC) on a comprehensive survey of emission-line galaxies at z < 1.5 based on narrowband imaging. The first Public Data Release provides us with data from two narrowband filters, specifically NB816 and NB921 over 5.7 deg2 and 16.2 deg2 respectively. The 5 σ limiting magnitudes are 25.2mag (UltraDeep layer, 1.4 deg2) and 24.8mag (Deep layer, 4.3 deg2) for NB816, and 25.1mag (UltraDeep, 2.9 deg2) and 24.6-24.8mag (Deep, 13.3 deg2) for NB921. The wide-field imaging allows us to construct unprecedentedly large samples of 8054 Hα emitters at z ≈ 0.25 and 0.40, 8656 [O III] emitters at z ≈ 0.63 and 0.84, and 16877 [O II] emitters at z ≈ 1.19 and 1.47.We map the cosmic web on scales out to about 50 comoving Mpc that includes galaxy clusters, identified by red sequence galaxies, located at the intersection of filamentary structures of star-forming galaxies. The luminosity functions of emission-line galaxies are measured with precision and are consistent with published studies. The wide field coverage of the data enables us to measure the luminosity functions up to brighter luminosities than previous studies. The comparison of the luminosity functions between the different HSC-SSP fields suggests that a survey volume of >5 × 105 Mpc3 is essential to overcome cosmic variance. Since the current data have not reached the full depth expected for the HSC-SSP, the color cut in i - NB816 or z - NB921 induces a bias towards star-forming galaxies with large equivalent widths, primarily seen in the stellar mass functions for the Hα emitters at z ≈ 0.25-0.40. Even so, the emission-line galaxies clearly cover a wide range of luminosity, stellar mass, and environment, thus demonstrating the usefulness of the narrowband data from the HSC-SSP for investigating star-forming galaxies at z < 1.5.
KW - Evolution-galaxies
KW - Galaxies
KW - High-redshift-galaxies
KW - Luminosity function
KW - Mass function-large-scale structure of universe
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U2 - 10.1093/pasj/psx088
DO - 10.1093/pasj/psx088
M3 - Article
AN - SCOPUS:85041649269
SN - 0004-6264
VL - 70
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
IS - Special Issue 1
M1 - S17
ER -