Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). IV. Discovery of 41 Quasars and Luminous Galaxies at 5.7 ≤ z ≤ 6.9

被引：104

作者：

Matsuoka, Yoshiki ^{[1
]}

Iwasawa, Kazushi ^{[2
,3
]}

Onoue, Masafusa ^{[4
,5
]}

Kashikawa, Nobunari ^{[4
,5
]}

Strauss, Michael A. ^{[6
]}

Lee, Chien-Hsiu ^{[7
]}

Imanishi, Masatoshi ^{[4
,5
]}

Nagao, Tohru ^{[1
]}

Akiyama, Masayuki ^{[8
]}

Asami, Naoko ^{[9
]}

Bosch, James ^{[6
]}

Furusawa, Hisanori ^{[4
]}

Goto, Tomotsugu ^{[10
,11
]}

Gunn, James E. ^{[6
]}

Harikane, Yuichi ^{[12
,13
]}

Ikeda, Hiroyuki ^{[4
]}

Izumi, Takuma ^{[4
]}

Kawaguchi, Toshihiro ^{[14
]}

Kato, Nanako ^{[15
]}

Kikuta, Satoshi ^{[4
,5
]}

Kohno, Kotaro ^{[16
,17
]}

Komiyama, Yutaka ^{[4
,5
]}

Lupton, Robert H. ^{[6
]}

Minezaki, Takeo ^{[16
]}

Miyazaki, Satoshi ^{[4
,5
]}

Morokuma, Tomoki ^{[16
]}

Murayama, Hitoshi ^{[18
]}

Niida, Mana ^{[15
]}

Nishizawa, Atsushi J. ^{[19
]}

Oguri, Masamune ^{[13
,17
,18
]}

Ono, Yoshiaki ^{[12
]}

Ouchi, Masami ^{[12
,18
]}

Price, Paul A. ^{[6
]}

Sameshima, Hiroaki ^{[20
]}

Schulze, Andreas ^{[4
]}

Shirakata, Hikari ^{[21
]}

Silverman, John D. ^{[18
]}

Sugiyama, Naoshi ^{[18
,22
]}

Tait, Philip J. ^{[7
]}

Takada, Masahiro ^{[18
]}

Takata, Tadafumi ^{[4
,5
]}

Tanaka, Masayuki ^{[4
,5
]}

Tang, Ji-Jia ^{[23
]}

Toba, Yoshiki ^{[1
,23
,24
]}

Utsumi, Yousuke ^{[25
]}

Wang, Shiang-Yu ^{[23
]}

Yamashita, Takuji ^{[1
]}

机构：

[1] Ehime Univ, Res Ctr Space & Cosm Evolut, Matsuyama, Ehime 7908577, Japan

[2] Univ Barcelona, IEEC UB, ICREA, Marti i Franques 1, E-08028 Barcelona, Spain

[3] Univ Barcelona, IEEC UB, Inst Ciencies Cosmos, Marti i Franques 1, E-08028 Barcelona, Spain

[4] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[5] Grad Univ Adv Studies SOKENDAI, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan

[6] Princeton Univ Observ, Peyton Hall, Princeton, NJ 08544 USA

[7] Subaru Telescope, Hilo, HI 96720 USA

[8] Tohoku Univ, Astron Inst, Aoba Ku, Sendai, Miyagi 9808578, Japan

[9] Seisa Univ, Hakone, Kanagawa 2500631, Japan

[10] Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan

[11] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[12] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[13] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[14] Onomichi City Univ, Dept Econ Management & Informat Sci, Onomichi, Hiroshima 7228506, Japan

[15] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

[16] Univ Tokyo, Inst Astron, Tokyo, Tokyo 1810015, Japan

[17] Univ Tokyo, Res Ctr Early Universe, Tokyo 1130033, Japan

[18] Univ Tokyo, Kavli Inst Phys & Math Universe, WPI, Kashiwa, Chiba 2778583, Japan

[19] Nagoya Univ, Inst Adv Res, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan

[20] Kyoto Sangyo Univ, Koyama Astron Observ, Kita Ku, Kyoto 6038555, Japan

[21] Hokkaido Univ, Grad Sch Sci, Dept Cosmosci, Kita Ku, Sapporo, Hokkaido 0600810, Japan

[22] Nagoya Univ, Grad Sch Sci, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan

[23] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[24] Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan

[25] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94025 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2018年 / 237卷 / 01期

基金：

日本科学技术振兴机构; 美国国家科学基金会; 日本学术振兴会; 美国国家航空航天局;

关键词：

dark ages; reionization; first stars; galaxies: active; galaxies: high-redshift; intergalactic medium; quasars: general; quasars: supermassive black holes; DIGITAL SKY SURVEY; DATA RELEASE; BLACK-HOLE; REDSHIFT; SPECTROGRAPH; REIONIZATION; CONSTRAINTS; EVOLUTION; SOFTWARE; DESIGN;

D O I：

10.3847/1538-4365/aac724

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of 41 new high-z quasars and luminous galaxies that were spectroscopically identified at 5.7 <= z <= 6.9. This is the fourth in a series of papers from the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, based on the deep multi-band imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. We selected the photometric candidates using a Bayesian probabilistic algorithm and then carried out follow-up spectroscopy with the Gran Telescopio Canarias and the Subaru Telescope. Combined with the sample presented in the previous papers, we have now spectroscopically identified 137 extremely red HSC sources over about 650 deg(2),which includes 64 high-z quasars, 24 high-z luminous galaxies, 6 [O III] emitters at z similar to 0.8, and 43 Galactic cool dwarfs (low-mass stars and brown dwarfs). The new quasars span in luminosity range from M-1450 similar to -26 to -22 mag, and continue to populate luminosities a few magnitudes lower than have been probed by previous wide-field surveys. In a companion paper, we derive the quasar luminosity function at z similar to 6 over an unprecedentedly wide range of M-1450 similar to -28 to -21 mag, exploiting the SHELLQs and other survey outcomes.

引用

页数：17

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