Exploring the evolution of supermassive black holes through the synergetic wide-field observations with Subaru/HSC and eROSITA

• Project/Area Number: 20H01949
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 16010:Astronomy-related
• Research Institution: Ehime University
• Principal Investigator: Nagao Tohru 愛媛大学, 宇宙進化研究センター, 教授 (00508450)
• Co-Investigator(Kenkyū-buntansha): 伊藤 洋一 兵庫県立大学, 自然・環境科学研究所, 教授 (70332757)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2022: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: 光学赤外線天文学 / 巨大ブラックホール / 銀河進化 / 多波長天文学 / 広域サーベイ / X線γ線天文学 / Ｘ線γ線天文学

Outline of Research at the Start

巨大ブラックホールがいつどのように莫大な質量を獲得したのかを調べるため、様々な種族の活動銀河核(AGN)の光度を統一的手法で測定して巨大ブラックホールの質量成長率を系統的に調査する必要がある。これを初めて実現するため、本研究ではすばるHSCの可視光観測とeROSITA宇宙望遠鏡のエックス線観測、およびアーカイブとして利用できる中間赤外線・電波サーベイのデータを組み合わせ、広域多波長連携高感度サーベイを敢行する。多様なAGN種族について統一的手法で巨大ブラックホール成長を定量的に計測する本研究により、巨大ブラックホール進化の全貌を初めて解明する。

Outline of Final Research Achievements

To understand the cosmological evolution of supermassive black holes, we made surveys and detailed investigations of various populations of active galactic nuclei (AGNs) by utilizing multi-wavelength deep and wide surveys. We successfully derived the luminosity function of quasars at z~5 through the Lyman-break selection, and revealed the so-called downsizing evolution of quasars by comparing with quasar luminosity functions at other redshifts. We performed spectroscopic observations for dusty AGNs showing a blue-excess component in their spectral energy distribution, and showed that such AGNs are in the transition stage from optically-thick to optically-thin phases. We also successfully discovered a high-redshift radio galaxy in this study.

Academic Significance and Societal Importance of the Research Achievements

巨大ブラックホール進化の観測的研究を進めるために有効な、多種族の活動銀河核の系統的探査を行うためには、多波長での広域サーベイデータが必要であるが、本研究は現時点で利用可能な多波長サーベイデータをフル活用して行われたものとして重要である。特に、広域での研究を行ったことにより、従来は認識が困難であったような、短いタイムスケールに相当する天体種族、特にここでは光学的に厚い段階から薄い段階への遷移途上にあるような活動銀河核を発見することができた点が、巨大ブラックホール進化の全貌解明という観点で学術的に意義深い。

Research Products

• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] マックスプランク研究所/ポツダム天体物理研究所(ドイツ)
• [Int'l Joint Research] ボローニャ大学(イタリア)
• [Int'l Joint Research] 中央研究院天文及天文物理研究所/国立清華大学(台湾)
• [Int'l Joint Research] アテネ国立天文台(ギリシャ)
• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] マックスプランク研究所/ポツダム天体物理研究所/ヨーロッパ南天天文台(ドイツ)
• [Int'l Joint Research] ボローニャ大学/フィレンツェ大学/アルチェトリ天文台(イタリア)
• [Int'l Joint Research] 中央研究院天文及天文物理研究所(台湾)
• [Int'l Joint Research] ケンブリッジ大学(英国)
• [Int'l Joint Research] マックスプランク研究所(ドイツ)
• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] ソウル国立大学(韓国)
• [Journal Article] Massive Molecular Gas Companions Uncovered by Very Large Array CO(1-0) Observations of the z = 5.2 Radio Galaxy TN J0924-2201 (2023)
  • Author(s): Lee Kianhong、Kohno Kotaro、Hatsukade Bunyo、Egusa Fumi、Yamashita Takuji、Schramm Malte、Ichikawa Kohei、Imanishi Masatoshi、Izumi Takuma、Nagao Tohru、Toba Yoshiki、Umehata Hideki
  • Journal Title: The Astrophysical Journal Volume: 944 Issue: 1 Pages: 35-35
  • DOI: 10.3847/1538-4357/acaf58
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] eROSITA Final Equatorial-Depth Survey (eFEDS). eFEDS X-ray view of WERGS radio galaxies selected by the Subaru/HSC and VLA/FIRST survey (2023)
  • Author(s): Ichikawa Kohei、Yamashita Takuji、Merloni Andrea、Li Junyao、Liu Teng、Salvato Mara、Akiyama Masayuki、Arcodia Riccardo、Dwelly Tom、Chen Xiaoyang、Imanishi Masatoshi、Inayoshi Kohei、Kawaguchi Toshihiro、Kawamuro Taiki、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 672 Pages: A171-A171
  • DOI: 10.1051/0004-6361/202244271
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiline Assessment of Narrow-line Regions in z~3 Radio Galaxies (2022)
  • Author(s): Terao Koki, Nagao Tohru, Onishi Kyoko, Matsuoka Kenta, Akiyama Masayuki, Matsuoka Yoshiki, Yamashita Takuji
  • Journal Title: The Astrophysical Journal Volume: 929 Issue: 1 Pages: 51-51
  • DOI: 10.3847/1538-4357/ac5b71
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The eROSITA Final Equatorial-Depth Survey (eFEDS). Identification and characterization of the counterparts to point-like sources (2022)
  • Author(s): Salvato M., Wolf J., Dwelly T., Georgakakis A., Brusa M., Merloni A., Liu T., Toba Y., Nandra K., Lamer G., Buchner J., Schneider C., Freund S., Rau A., Schwope A., Nishizawa A., Klein M., Arcodia R., Comparat J., Musiimenta B., Nagao T., et al.
  • Journal Title: Astronomy and Astrophysics Volume: 661 Pages: A3-A3
  • DOI: 10.1051/0004-6361/202141631
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The eROSITA Final Equatorial-Depth Survey (eFEDS). The first archetypal quasar in the feedback phase discovered by eROSITA (2022)
  • Author(s): Brusa M., Urrutia T., Toba Y., Buchner J., Li J.-Y., Liu T., Perna M., Salvato M., Merloni A., Musiimenta B., Nandra K., Wolf J., Arcodia R., Dwelly T., Georgakakis A., Goulding A., Matsuoka Y., Nagao T., Schramm M., Silverman J. D., Terashima Y.
  • Journal Title: Astronomy and Astrophysics Volume: 661 Pages: A9-A9
  • DOI: 10.1051/0004-6361/202141092
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The eROSITA Final Equatorial-Depth Survey (eFEDS). A multiwavelength view of WISE mid-infrared galaxies/active galactic nuclei (2022)
  • Author(s): Toba Yoshiki、Liu Teng、Urrutia Tanya、Salvato Mara、Li Junyao、Ueda Yoshihiro、Brusa Marcella、Yutani Naomichi、Wada Keiichi、Nishizawa Atsushi J.、Buchner Johannes、Nagao Tohru、Merloni Andrea、Akiyama Masayuki、Arcodia Riccardo、Hsieh Bau-Ching、Ichikawa Kohei、Imanishi Masatoshi、Inoue, Kaiki T.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 661 Pages: A15-A15
  • DOI: 10.1051/0004-6361/202141547
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). VII. Redshift Evolution of Radio Galaxy Environments at z = 0.3?1.4 (2022)
  • Author(s): Uchiyama Hisakazu、Yamashita Takuji、Nagao Tohru、Ichikawa Kohei、Toba Yoshiki、Ishikawa Shogo、Kubo Mariko、Kajisawa Masaru、Kawaguchi Toshihiro、Kawakatu Nozomu、Lee Chien-Hsiu、Noboriguchi Akatoki
  • Journal Title: The Astrophysical Journal Volume: 934 Issue: 1 Pages: 68-68
  • DOI: 10.3847/1538-4357/ac77ee
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An AGN with an Ionized Gas Outflow in a Massive Quiescent Galaxy in a Protocluster at z = 3.09 (2022)
  • Author(s): Kubo Mariko、Umehata Hideki、Matsuda Yuichi、Kajisawa Masaru、Steidel Charles C.、Yamada Toru、Tanaka Ichi、Hatsukade Bunyo、Tamura Yoichi、Nakanishi Kouichiro、Kohno Kotaro、Lee Kianhong、Matsuda Keiichi、Ao Yiping、Nagao Tohru、Yun Min S.
  • Journal Title: The Astrophysical Journal Volume: 935 Issue: 2 Pages: 89-89
  • DOI: 10.3847/1538-4357/ac7f2d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] XXL-HSC: Link between AGN activity and star formation in the early Universe (z>3.5) (2022)
  • Author(s): Pouliasis E., Mountrichas G., Georgantopoulos I., Ruiz A., Gilli R., Koulouridis E., Akiyama M., Ueda Y., Garrel C., Nagao T., Paltani S., Pierre M., Toba Y., Vignali C.
  • Journal Title: Astronomy and Astrophysics Volume: 667 Pages: A56-A56
  • DOI: 10.1051/0004-6361/202243502
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). XV. Constraining the cosmic reionization at 5.5 < z < 7 (2022)
  • Author(s): Lu Ting-Yi, Goto Tomotsugu, Hashimoto Tetsuya, Santos Daryl Joe D, Wong Yi Hang Valerie, Kim Seong Jin, Hsiao Tiger Y-Y, Kilerci Ece, Ho Simon C-C, Nagao Tohru, Matsuoka Yoshiki, Onoue Masafusa, Toba Yoshiki, SHELLQs collaboration
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 517 Issue: 1 Pages: 1264-1281
  • DOI: 10.1093/mnras/stac2681
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Extreme Nature of Four Blue-excess Dust-obscured Galaxies Revealed by Optical Spectroscopy (2022)
  • Author(s): Noboriguchi Akatoki, Nagao Tohru, Toba Yoshiki, Ichikawa Kohei, Kajisawa Masaru, Kato Nanako, Kawaguchi Toshihiro, Matsuhara Hideo, Matsuoka Yoshiki, Onishi Kyoko, Onoue Masafusa, Tamada Nozomu, Terao Koki, Terashima Yuichi, Ueda Yoshihiro, Yamashita Takuji
  • Journal Title: The Astrophysical Journal Volume: 941 Issue: 2 Pages: 195-195
  • DOI: 10.3847/1538-4357/aca403
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Optical IFU observations of GOALS sample with KOOLS-IFU on Seimei Telescope: Initial results of nine U/LIRGs at < 0.04 (2022)
  • Author(s): Toba Y., Yamada S., Matsubayashi K., Terao K., Moriya A., Ueda Y., Ohta K., Hashiguchi A., Himoto K. G., Izumiura H., Joh K., Kato N., Koyama S., Maehara H., Misato R., Noboriguchi A., Ogawa S., Ota N., Shibata M., Tamada N., Yanagawa A., Yonekura N., Nagao T., Akiyama M., Kajisawa M., Matsuoka Y.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 6 Pages: 1356-1367
  • DOI: 10.1093/pasj/psac073
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). IX. The most overdense region at <i>z</i> ? 5 inhabited by a massive radio galaxy (2022)
  • Author(s): Uchiyama Hisakazu、Yamashita Takuji、Nagao Tohru、Ono Yoshiaki、Toshikawa Jun、Ichikawa Kohei、Kawakatu Nozomu、Kajisawa Masaru、Toba Yoshiki、Matsuoka Yoshiki、Kubo Mariko、Imanishi Masatoshi、Ito Kei、Kawaguchi Toshihiro、Lee Chien-Hsiu、Saito Tomoki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 6 Pages: 27-32
  • DOI: 10.1093/pasj/psac075
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] XXL-HSC: An updated catalogue of high-redshift (z~3.5) X-ray AGN in the XMM-XXL northern field. Constraints on the bright end of the soft log N-log S (2022)
  • Author(s): Pouliasis, E. (Ueda, Y.) et al.
  • Journal Title: Astronomy & Astrophysics Volume: 658 Pages: A175-A175
  • DOI: 10.1051/0004-6361/202142059
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). VI. Distant Filamentary Structures Pointed Out by High-z Radio Galaxies at z ? 4 (2022)
  • Author(s): Uchiyama Hisakazu、Yamashita Takuji、Toshikawa Jun、Kashikawa Nobunari、Ichikawa Kohei、Kubo Mariko、Ito Kei、Kawakatu Nozomu、Nagao Tohru、Toba Yoshiki、Ono Yoshiaki、Harikane Yuichi、Imanishi Masatoshi、Kajisawa Masaru、Lee Chien-Hsiu、Liang Yongming
  • Journal Title: The Astrophysical Journal Volume: 926 Issue: 1 Pages: 76-76
  • DOI: 10.3847/1538-4357/ac441c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVI. 69 New Quasars at 5.8 &lt; z &lt; 7.0 (2022)
  • Author(s): Matsuoka Y.、Iwasawa K.、Onoue M.、Izumi T.、Kashikawa N.、Strauss M.A.、Imanishi M.、Nagao T.、Akiyama M.、Silverman J.D.、Asami N.、Bosch J.、Furusawa H.、Goto T.、Gunn J.E.、Harikane Y.、Ikeda H.、Ishimoto R.、Kawaguchi Toshihiro、et al.
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 259 Issue: 1 Pages: 18-18
  • DOI: 10.3847/1538-4365/ac3d31
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The eROSITA Final Equatorial-Depth Survey (eFEDS). An X-ray-bright, extremely luminous infrared galaxy at z = 1.87 (2021)
  • Author(s): Toba Yoshiki、Brusa Marcella、Liu Teng、Buchner Johannes、Terashima Yuichi、Urrutia Tanya、Salvato Mara、Akiyama Masayuki、Arcodia Riccardo、Goulding Andy D.、Higuchi Yuichi、Inoue Kaiki T.、Kawaguchi Toshihiro、Lamer Georg、Merloni Andrea、Nagao Tohru、Ueda Yoshihiro、Nandra Kirpal
  • Journal Title: Astronomy & Astrophysics Volume: 649 Pages: L11-L11
  • DOI: 10.1051/0004-6361/202140317
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] How Does the Polar Dust Affect the Correlation between Dust Covering Factor and Eddington Ratio in Type 1 Quasars Selected from the Sloan Digital Sky Survey Data Release 16? (2021)
  • Author(s): Toba Yoshiki、Ueda Yoshihiro、Gandhi Poshak、Ricci Claudio、Burgarella Denis、Buat Veronique、Nagao Tohru、Oyabu Shinki、Matsuhara Hideo、Hsieh Bau-Ching
  • Journal Title: The Astrophysical Journal Volume: 912 Issue: 2 Pages: 91-105
  • DOI: 10.3847/1538-4357/abe94a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dense and Warm Neutral Gas in BR 1202-0725 at z = 4.7 as Traced by the [O I] 145 μm Line (2021)
  • Author(s): Lee, Minju M.; Nagao, Tohru; De Breuck, Carlos; Carniani, Stefano; Cresci, Giovanni; Hatsukade, Bunyo; Kawabe, Ryohei; Kohno, Kotaro, et al.
  • Journal Title: The Astrophysical Journal Volume: 913 Issue: 1 Pages: 41-41
  • DOI: 10.3847/1538-4357/abe7ea
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIII. Large-scale Feedback and Star Formation in a Low-luminosity Quasar at z = 7.07 on the Local Black Hole to Host Mass Relation (2021)
  • Author(s): Izumi T.、Matsuoka Y.、Fujimoto S.、Onoue M.、Strauss M.A.、Umehata H.、Imanishi M.、Kohno K.、Kawaguchi Toshihiro、Kawamuro T.、Baba S.、Nagao T.、Toba Y.、Inayoshi K.、Silverman J.D.、Inoue A.K.、Ikarashi S.、Iwasawa K.、Kashikawa N.、Hashimoto T.、Nakanishi K.、Ueda Y.、Schramm M.、Lee C.-H.、Suh H.
  • Journal Title: The Astrophysical Journal Volume: 914 Issue: 1 Pages: 36-36
  • DOI: 10.3847/1538-4357/abf6dc
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Strong Correlation between FeII/MgII Ratio and Eddington Ratio of Type 1 Active Galactic Nuclei (2021)
  • Author(s): Shin Jaejin, Woo Jong-Hak, Nagao Tohru, Kim Minjin, Bahk Hyeonguk
  • Journal Title: The Astrophysical Journal Volume: 917 Issue: 2 Pages: 107-107
  • DOI: 10.3847/1538-4357/ac0adf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Do gas clouds in narrow-line regions of Seyfert galaxies come from their nuclei? (2021)
  • Author(s): Joh Kazuma、Nagao Tohru、Wada Keiichi、Terao Koki、Yamashita Takuji
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 73 Issue: 4 Pages: 1152-1165
  • DOI: 10.1093/pasj/psab065
  • Peer Reviewed
• [Journal Article] The Sizes of Quasar Host Galaxies in the Hyper Suprime-Cam Subaru Strategic Program (2021)
  • Author(s): Li Junyao、Silverman John D.、Ding Xuheng、Strauss Michael A.、Goulding Andy、Birrer Simon、Yesuf Hassen M.、Xue Yongquan、Kawinwanichakij Lalitwadee、Matsuoka Yoshiki、Toba Yoshiki、Nagao Tohru、Schramm Malte、Inayoshi Kohei
  • Journal Title: The Astrophysical Journal Volume: 918 Issue: 1 Pages: 22-22
  • DOI: 10.3847/1538-4357/ac06a8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIV. A Candidate Type II Quasar at z = 6.1292 (2021)
  • Author(s): Onoue Masafusa、Matsuoka Yoshiki、Kashikawa Nobunari、Strauss Michael A.、Iwasawa Kazushi、Izumi Takuma、Nagao Tohru、Asami Naoko、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Imanishi Masatoshi、Lee Chien-Hsiu、Shibuya Takatoshi、Toba Yoshiki
  • Journal Title: The Astrophysical Journal Volume: 919 Issue: 1 Pages: 61-61
  • DOI: 10.3847/1538-4357/ac0f07
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). IV. Rapidly Growing (Super)Massive Black Holes in Extremely Radio-loud Galaxies (2021)
  • Author(s): Ichikawa Kohei、Yamashita Takuji、Toba Yoshiki、Nagao Tohru、Inayoshi Kohei、Charisi Maria、He Wanqiu、Wagner Alexander Y. et al.
  • Journal Title: The Astrophysical Journal Volume: 921 Issue: 1 Pages: 51-51
  • DOI: 10.3847/1538-4357/ac1b26
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Synchronized Coevolution between Supermassive Black Holes and Galaxies over the Last Seven Billion Years as Revealed by Hyper Suprime-Cam (2021)
  • Author(s): Li Junyao、Silverman John D.、Ding Xuheng、Strauss Michael A.、Goulding Andy、Schramm Malte、Yesuf Hassen M.、Sun Mouyuan、Xue Yongquan、Birrer Simon、Shi Jingjing、Toba Yoshiki、Nagao Tohru、Imanishi Masatoshi
  • Journal Title: The Astrophysical Journal Volume: 922 Issue: 2 Pages: 142-142
  • DOI: 10.3847/1538-4357/ac2301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Properties of AGN Multiband Optical Variability in the HSC SSP Transient Survey (2020)
  • Author(s): Kimura Yuki, Yamada Toru, Kokubo Mitsuru, Yasuda Naoki, Morokuma Tomoki, Nagao Tohru, Matsuoka Yoshiki
  • Journal Title: The Astrophysical Journal Volume: 894 Issue: 1 Pages: 24-24
  • DOI: 10.3847/1538-4357/ab83f3
  • Peer Reviewed
• [Journal Article] Metal Enrichment in the Circumgalactic Medium and Ly_alpha Halos around Quasars at z~3 (2020)
  • Author(s): Guo Yucheng, Maiolino Roberto, Jiang Linhua, Matsuoka Kenta, Nagao Tohru, Dors Oli Luiz, Ginolfi Michele, Henden Nick, Bennett Jake, Sijacki Debora, Puchwein Ewald
  • Journal Title: The Astrophysical Journal Volume: 898 Issue: 1 Pages: 26-26
  • DOI: 10.3847/1538-4357/ab9b7f
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Circumnuclear Molecular Gas in Low-redshift Quasars and Matched Star-forming Galaxies (2020)
  • Author(s): Izumi Takuma、Silverman John D.、Jahnke Knud、Schulze Andreas、Cen Renyue、Schramm Malte、Nagao Tohru、Wisotzki Lutz、Rujopakarn Wiphu
  • Journal Title: The Astrophysical Journal Volume: 898 Issue: 1 Pages: 61-77
  • DOI: 10.3847/1538-4357/ab99a8
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). III. Discovery of a z = 4.72 Radio Galaxy with the Lyman Break Technique (2020)
  • Author(s): Yamashita Takuji、Nagao Tohru、Ikeda Hiroyuki、Toba Yoshiki、Kajisawa Masaru、Ono Yoshiaki、Tanaka Masayuki、Akiyama Masayuki、Harikane Yuichi、Ichikawa Kohei、Kawaguchi Toshihiro、Kawamuro Taiki、Kohno Kotaro、Lee Chien-Hsiu、Lee Kianhong、Matsuoka Yoshiki、Niida Mana、Ogura Kazuyuki、Onoue Masafusa、Uchiyama Hisakazu
  • Journal Title: The Astronomical Journal Volume: 160 Issue: 2 Pages: 60-60
  • DOI: 10.3847/1538-3881/ab98fe
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] No Redshift Evolution in the Broad-line-region Metallicity up to z = 7.54: Deep Near-infrared Spectroscopy of ULAS J1342+0928 (2020)
  • Author(s): Onoue Masafusa、Banados Eduardo、Mazzucchelli Chiara、Venemans Bram P.、Schindler Jan-Torge、Walter Fabian、Hennawi Joseph F.、Andika Irham Taufik、Davies Frederick B.、Decarli Roberto、Farina Emanuele P.、Jahnke Knud、Nagao Tohru、Tominaga Nozomu、Wang Feige
  • Journal Title: The Astrophysical Journal Volume: 898 Issue: 2 Pages: 105-105
  • DOI: 10.3847/1538-4357/aba193
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru Hyper Suprime-Cam view of quasar host galaxies at z &lt; 1 (2020)
  • Author(s): Ishino Toru、Matsuoka Yoshiki、Koyama Shuhei、Saeda Yuya、Strauss Michael A、Goulding Andy D、Imanishi Masatoshi、Kawaguchi Toshihiro、Minezaki Takeo、Nagao Tohru、Noboriguchi Akatoki、Schramm Malte、Silverman John D、Taniguchi Yoshiaki、Toba Yoshiki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 5 Pages: 83-83
  • DOI: 10.1093/pasj/psaa072
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). IX. Identification of two red quasars at z &gt; 5.6 (2020)
  • Author(s): Kato Nanako、Matsuoka Yoshiki、Onoue Masafusa、Koyama Shuhei、Toba Yoshiki、Akiyama Masayuki、Fujimoto Seiji、Imanishi Masatoshi、Iwasawa Kazushi、Izumi Takuma、Kashikawa Nobunari、Kawaguchi Toshihiro、Lee Chien-Hsiu、Minezaki Takeo、Nagao Tohru、Noboriguchi Akatoki、Strauss Michael A
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 5 Pages: 84-84
  • DOI: 10.1093/pasj/psaa074
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Faint End of the Quasar Luminosity Function at z ? 5 from the Subaru Hyper Suprime-Cam Survey (2020)
  • Author(s): Niida Mana, Nagao Tohru, Ikeda Hiroyuki, et al.
  • Journal Title: The Astrophysical Journal Volume: 904 Issue: 2 Pages: 89-89
  • DOI: 10.3847/1538-4357/abbe11
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ? 4 (2020)
  • Author(s): Uchiyama Hisakazu、Akiyama Masayuki、Toshikawa Jun、Kashikawa Nobunari、Overzier Roderik、Nagao Tohru、Ichikawa Kohei、Marinello Murilo、Imanishi Masatoshi、Tanaka Masayuki、Matsuoka Yoshiki、Komiyama Yutaka、Ishikawa Shogo、Onoue Masafusa、Kubo Mariko、Harikane Yuichi、Ito Kei、Namiki Shigeru、Liang Yongming
  • Journal Title: The Astrophysical Journal Volume: 905 Issue: 2 Pages: 125-125
  • DOI: 10.3847/1538-4357/abc47b
  • Peer Reviewed / Int'l Joint Research
• [Presentation] The nature of new z~4 high-z radio galaxies from HSC-SSP and VLA/FIRST (2023)
  • Author(s): Yamamoto, Y., Nagao, T., Uchiyama, H., Yamashita, T., Toba, Y., Kubo, M., Noboriguchi, A., Ono, Y., Harikane, Y.
  • Organizer: Subaru Users Meeting FY2022
  • Int'l Joint Research
• [Presentation] Environment of SDSS quasars at z = 0.3-1.0 traced by Subaru HSC (2023)
  • Author(s): Shibata, K., Nagao, T., Uchiyama, H., Kubo, M.
  • Organizer: The 9th galaxy evolution workshop
  • Int'l Joint Research
• [Presentation] 高赤方偏移クェーサーを用いた超大質量原始ブラックホール生成シナリオの検証 (2023)
  • Author(s): He, W, 松岡良樹, 長尾透, 篠原拓見, 須山輝明, 高橋智
  • Organizer: 日本物理学会春季大会
• [Presentation] Chemical evolution of dusty galaxies in the cosmic noon (2023)
  • Author(s): Nagao, T.
  • Organizer: PRIMA Community Workshop 2023
  • Int'l Joint Research
• [Presentation] Environment of SDSS quasars at z = 0.3-1.0 traced by Subaru HSC (2023)
  • Author(s): Shibata, K., Nagao, T., Uchiyama, H., Kubo, M.
  • Organizer: The First SUPER-IRNET Workshop -Rebooting Our In-Person Collaboration-
  • Int'l Joint Research
• [Presentation] Future infrared views for the chemical enrichment history of galaxies (2022)
  • Author(s): Nagao, T.
  • Organizer: Symposium "The golden decade of infrared astrophysics" in the European Astronomical Society Annual Meeting 2022
  • Int'l Joint Research / Invited
• [Presentation] New pictures of radio galaxies viewed with Subaru/HSC (2022)
  • Author(s): Nagao, T.
  • Organizer: AGN mini-workshop in Kagoshima
• [Presentation] BLRの起源: Radiation-driven fountain modelからの示唆 (2022)
  • Author(s): 和田桂一, 工藤祐己, 長尾透
  • Organizer: AGN mini-workshop in Kagoshima
• [Presentation] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS): z=4.72の電波銀河周辺環境 (2022)
  • Author(s): 内山久和, 山下拓時, 長尾透, 鍛冶澤賢, 松岡良樹, 久保真理子, 小野宜昭, 利川潤, 市川幸平, 川勝望, 鳥羽儀樹, 今西 昌俊, 伊藤慧, 川口俊宏, Lee, C. -H., 斎藤智樹
  • Organizer: 日本天文学会2022年秋季年会
• [Presentation] すばる望遠鏡HSCデータとSDSSクェーサーカタログを用いたz=0.3－1.0のクェーサー周辺環境の調査 (2022)
  • Author(s): 柴田航平, 長尾透, 内山久和, 久保真理子
  • Organizer: 日本天文学会2022年秋季年会
• [Presentation] UNIONS データに基づく赤方偏移3の電波銀河探査 (2022)
  • Author(s): 井手亮太, 長尾透, 内山久和, 久保真理子, 山本優太
  • Organizer: 日本天文学会2022年秋季年会
• [Presentation] 赤方偏移4における遠方電波銀河の探査と性質調査 (2022)
  • Author(s): 山本優太, 長尾透, 久保真理子, 内山久和, 山下拓時, 鳥羽儀樹, 登口暁, 播金優一, 小野宜昭
  • Organizer: 日本天文学会2022年秋季年会
• [Presentation] Gemini/GNIRSを用いたblue-excess dust-obscured galaxiesの近赤外線分光観測 (2022)
  • Author(s): 登口暁, 長尾透, 久保真理子, 寺島雄一, 山本優太, 鳥羽儀樹, 寺尾航暉, 山下拓時, 秋山正幸, 市川幸平, 藤本征史, 泉琢磨, 小山舜平, 本原顕太郎, 大西響子, 尾上匡房, Malte Schramm, 山中郷史
  • Organizer: 日本天文学会2022年秋季年会
• [Presentation] PFS余剰ファイバーを用いたAGNサイエンス案 (2022)
  • Author(s): 鳥羽儀樹, 松岡良樹, 長尾透, 三澤透, John Silverman
  • Organizer: PFS科学運用に関するコミュニティーミーティング
• [Presentation] AGNの観測的研究：すばるHSCからその先へ (2022)
  • Author(s): 長尾透
  • Organizer: 初代星・初代銀河研究会2022
  • Invited
• [Presentation] Environment of SDSS quasars at z = 0.3-1.0 traced by Subaru HSC (2022)
  • Author(s): Shibata, K., Nagao, T., Uchiyama, H., Kubo, M.
  • Organizer: Tracing the SMBH growth: outlook beyond the HSC-SSP, and future collaborations
  • Int'l Joint Research
• [Presentation] A near-infrared spectroscopic observation for a blue-excess dust-obscured galaxy by using Gemini/GNIRS (2022)
  • Author(s): Noboriguchi, A., Nagao, T., Terashima, Y., Yamamoto, Y., Toba, Y., Terao, K., Yamashita, T., Akiyama, M., Ichikawa, K., Kubo, M., Fujimoto, S., Izumi, T., Koyama, S., Motohara, K., Onishi, K., Onoue, M., Schramm, M., Yamanaka, S.
  • Organizer: Tracing the SMBH growth: outlook beyond the HSC-SSP, and future collaborations
  • Int'l Joint Research
• [Presentation] A new z~4 radio galaxy survey with HSC-SSP and VLA/FIRST (2022)
  • Author(s): Yamamoto, Y., Nagao, T., Kubo, M., Uchiyama, H., Yamashita, T., Toba, Y., Noboriguchi, A., Harikane, Y., Ono, Y.
  • Organizer: Tracing the SMBH growth: outlook beyond the HSC-SSP, and future collaborations
  • Int'l Joint Research
• [Presentation] The z~4 radio galaxy survey with HSC-SSP and FIRST (2022)
  • Author(s): Yamamoto, Y., Nagao, T., Kubo, M., Uchiyama, H., Yamashita, T., Toba, Y., Noboriguchi, A., Ono, Y., Harikane, Y.
  • Organizer: Subaru Users Meeting FY2021
  • Int'l Joint Research
• [Presentation] Extreme nature of blue-excess dust-obscured galaxies revealed by optical spectroscopy (2022)
  • Author(s): Noboriguchi, A., Nagao, T., Kajisawa, M., Kato, N., Matsuoka, Y., Tamada, N., Terashima, Y., Toba, Y., Ueda, Y., Ichikawa, K., Terao, K., Kawaguchi, T., Matsuhara, H., Onishi, K., Onoue, M., Yamashita, T.
  • Organizer: Subaru Users Meeting FY2021
  • Int'l Joint Research
• [Presentation] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS): z=0.3-1.4の電波銀河周辺環境の統計的理解 (2022)
  • Author(s): 内山久和, 山下拓時, 長尾透, 久保真理子, 鍛冶澤賢, 市川幸平, 登口暁, 鳥羽儀樹, 石川将吾, 川口俊宏, 川勝望, Lee, C. -H., and WERGS members
  • Organizer: 日本天文学会2022年春季年会
• [Presentation] Subaru wide-field AGN surveys toward high-z AGN metallicity studies (2021)
  • Author(s): Nagao, T.
  • Organizer: Workshop Chemical Abundances in Gaseous Nebulae
  • Int'l Joint Research / Invited
• [Presentation] eROSITA view of WISE mid-IR galaxies/AGN (2021)
  • Author(s): Toba, Y., Brusa, M., Liu, T., Urrutia, T., Buchner, J., Li, J., Merloni, A., Nagao, T., Nishizawa, A., Salvato, M., Terashima, Y., Ueda, Y., Wada, K., Yutani, N.
  • Organizer: 17th German eROSITA Consortium Meeting
  • Int'l Joint Research
• [Presentation] Physical and chemical properties of narrow-line regions in z~3 radio galaxies throught multi-line assessment (2021)
  • Author(s): Terao, K., Nagao, T., Onishi, K., Matsuoka, K., Akiyama, M., Matsuoka, Y., Yamashita, T.
  • Organizer: East-Asia AGN Workshop 2021
  • Int'l Joint Research
• [Presentation] A new exploration of high-z radio galaxies with Subaru HSC (2021)
  • Author(s): Yamamoto, Y., Yamashita, T., Nagao, T., Kubo, M., Uchiyama, H., Ono, Y., Harikane, Y.
  • Organizer: East-Asia AGN Workshop 2021
  • Int'l Joint Research
• [Presentation] A Wide and Deep Exploration of RGs with Subaru HSC (WERGS): Statistical Characterization of Radio Galaxy Environments at z=0.3-1.4 (2021)
  • Author(s): Uchiyama, H., Yamashita, T., Nagao, T., Ichikawa, K., Toba, Y., Ishikawa, S., Kubo, M., Kajisawa, M., Kawaguchi, T., Kawakatu, N., Lee, C. -H., Noboriguchi, A., and WERGS members
  • Organizer: 第5回FORCE研究会「埋もれたAGNの宇宙論的進化」
• [Presentation] Extreme nature of blue-excess dust-obscured galaxies reveled by optical spectroscopy (2021)
  • Author(s): 登口暁, 長尾透, 鳥羽儀樹, 市川幸平, 上田佳宏, 鍛冶澤賢, 加藤奈々子, 川口俊宏, 松原英雄, 松岡良樹, 大西響子, 尾上匡房, 玉田望, 寺尾航暉, 寺島雄一, 山下拓時
  • Organizer: 第5回FORCE研究会「埋もれたAGNの宇宙論的進化」
• [Presentation] すばる望遠鏡で探る高赤方偏移電波銀河の性質 (2021)
  • Author(s): 山本優太, 長尾透, 久保真理子, 内山久和, 山下拓時, 鳥羽儀樹, 登口暁, 小野宜昭, 播金優一
  • Organizer: 第5回FORCE研究会「埋もれたAGNの宇宙論的進化」
• [Presentation] イントロダクション (2021)
  • Author(s): 長尾透
  • Organizer: 超巨大ブラックホール研究会: その実態・影響・起源の全貌解明に向けて
• [Presentation] 全波長帯での詳細観測で解明するSMBHの銀河への影響 (2021)
  • Author(s): 長尾透
  • Organizer: 超巨大ブラックホール研究会: その実態・影響・起源の全貌解明に向けて
• [Presentation] eROSITA view of an extremely luminous infrared galaxy at z=1.87 (2021)
  • Author(s): Toba, Y., Brusa, M., Liu, T., Buchner, J., Terashima, Y., Urrutia, T., Salvato, M., Akiyama, M., Arcodia, R., Goulding, A. D., Higuchi, Y., Inoue, K. T., Kawaguchi, T., Lamer, G., Merloni, A., Nagao, T., Ueda, Y., Nandra, K.
  • Organizer: Galaxy Evolution Workshop 2020
  • Int'l Joint Research
• [Presentation] SOFIA View of an Extremely Luminous Infrared Galaxy: WISE 1013+6112 (2020)
  • Author(s): Toba, Y., Wang, W. -H., Nagao, T., Ueda, Y., Ueda, J., Lim, C. -F., Chang, Y. -Y., Saito, T., Kawabe, R.
  • Organizer: 2020年日本天文学会秋季年会
• [Presentation] Truth or Delusion? A Possible Gravitational Lensing Interpretation of the Ultra-luminous Quasar SDSS J010013.02+280225.8 at z=6.30 (2020)
  • Author(s): Fujimoto, S., Oguri, M., Nagao, T., Izumi, T., Ouchi, M.
  • Organizer: 2020年日本天文学会秋季年会