SILVERRUSH. XIII. A Catalog of 20,567 Lyα Emitters at z = 2−7 Identified in the Full-depth Data of the Subaru/HSC-SSP and CHORUS Surveys

Satoshi Kikuta; Masami Ouchi; Takatoshi Shibuya; Yongming Liang; Hiroya Umeda; Akinori Matsumoto; Kazuhiro Shimasaku; Yuichi Harikane; Yoshiaki Ono; Akio K. Inoue; Satoshi Yamanaka; Haruka Kusakabe; Rieko Momose; Nobunari Kashikawa; Yuichi Matsuda; Chien-Hsiu Lee

doi:10.3847/1538-4365/ace4cb

The Astrophysical Journal Supplement Series (Jan 2023)

SILVERRUSH. XIII. A Catalog of 20,567 Lyα Emitters at z = 2−7 Identified in the Full-depth Data of the Subaru/HSC-SSP and CHORUS Surveys

Satoshi Kikuta,
Masami Ouchi,
Takatoshi Shibuya,
Yongming Liang,
Hiroya Umeda,
Akinori Matsumoto,
Kazuhiro Shimasaku,
Yuichi Harikane,
Yoshiaki Ono,
Akio K. Inoue,
Satoshi Yamanaka,
Haruka Kusakabe,
Rieko Momose,
Nobunari Kashikawa,
Yuichi Matsuda,
Chien-Hsiu Lee

Affiliations

Satoshi Kikuta: ORCiD; National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan ; [email protected]
Masami Ouchi: ORCiD; National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan ; [email protected]; Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan; Graduate University for Advanced Studies (SOKENDAI) , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo , Kashiwa, Chiba 277-8583, Japan
Takatoshi Shibuya: Kitami Institute of Technology , 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan
Yongming Liang: ORCiD; National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan ; [email protected]; Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
Hiroya Umeda: Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan; Department of Physics, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
Akinori Matsumoto: Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan; Department of Physics, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
Kazuhiro Shimasaku: ORCiD; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Research Center for the Early Universe, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Yuichi Harikane: ORCiD; Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
Yoshiaki Ono: ORCiD; Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan
Akio K. Inoue: ORCiD; Waseda Research Institute for Science and Engineering, Faculty of Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan; Department of Physics, School of Advanced Science and Engineering, Faculty of Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
Satoshi Yamanaka: ORCiD; General Education Department, National Institute of Technology, Toba College , 1-1, Ikegami-cho, Toba, Mie 517-8501, Japan
Haruka Kusakabe: ORCiD; National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan ; [email protected]; Observatoire de Genève, Université de Genève , 51 Chemin de Pégase, 1290 Versoix, Switzerland
Rieko Momose: ORCiD; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Carnegie Observatories , 813 Santa Barbara Street, Pasadena, CA 91101, USA
Nobunari Kashikawa: ORCiD; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Research Center for the Early Universe, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Yuichi Matsuda: ORCiD; National Astronomical Observatory of Japan , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan ; [email protected]; Graduate University for Advanced Studies (SOKENDAI) , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Cahill Center for Astronomy and Astrophysics, California Institute of Technology , MS 249-17, Pasadena, CA 91125, USA
Chien-Hsiu Lee: ORCiD; NSF's National Optical-Infrared Astronomy Research Laboratory , 950 N Cherry Avenue, Tucson, AZ 86719, USA

DOI: https://doi.org/10.3847/1538-4365/ace4cb
Journal volume & issue: Vol. 268, no. 1
p. 24

Abstract

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We present 20,567 Ly α emitters (LAEs) at z = 2.2 − 7.3 that are photometrically identified by the SILVERRUSH program in a large survey area up to 25 deg ^2 with deep images of five broadband filters ( grizy ) and seven narrowband filters targeting Ly α lines at z = 2.2, 3.3, 4.9, 5.7, 6.6, 7.0, and 7.3 taken by the Hyper Suprime-Cam Subaru Strategic Program and the Cosmic HydrOgen Reionization Unveiled with Subaru survey. We select secure >5 σ sources showing narrowband color excesses via Ly α break screening, taking into account the spatial inhomogeneity of limiting magnitudes. After removing spurious sources by careful masking and visual inspection of coadded and multiepoch images obtained over the 7 yr of the surveys, we construct LAE samples consisting of 6995, 4641, 726, 6124, 2058, 18, and 5 LAEs at z = 2.2, 3.3, 4.9, 5.7, 6.6, 7.0, and 7.3, respectively, although the z = 7.3 candidates are tentative. Our LAE catalogs contain 289 spectroscopically confirmed LAEs at the expected redshifts from previous work. We demonstrate that the number counts of our LAEs are consistent with previous studies with similar LAE selection criteria. The LAE catalogs will be made public on our project webpage with detailed descriptions of the content and ancillary information about the masks and limiting magnitudes.

Published in The Astrophysical Journal Supplement Series

ISSN: 0067-0049 (Print); 1538-4365 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0067-0049

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