Exploring galaxies and supermassive black holes in the earliest phase of their chemical evolution

• Project/Area Number: 23654068
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Ehime University (2013); Kyoto University (2011-2012)
• 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): KAWAKATSU Nozomu 呉工業高等専門学校, 自然科学系分野, 准教授 (30450183)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 銀河進化 / 光学赤外線天文学 / 巨大ブラックホール / 化学進化 / 電離ガス / スペクトル解析 / 電波天文学 / 銀河天文学 / 活動銀河核 / 宇宙化学進化 / 光電離モデル / 宇宙物理

Research Abstract

For exploring extremely metal-poor galaxies at the initial phase of their chemical evolution in nearby (i.e., current) universe, we performed wide-field narrow-band imaging observations and follow-up deep spectroscopic observations. Accordingly we found 20 galaxies emitting [OIII]4363 emission, that is expected for such metal-poor galaxies.
On the other hand, we investigated also the chemical properties of galaxies hosting supermassive black holes in nearby (i.e., current) universe, through the analysis of UV spectra of PG quasars. As a result, the inferred statistical dependences of their chemical properties on the mass accretion rate onto their supermassive black holes are systematically different between the nearby and distant universe. This infers a systematically different physics behind the mass fueling onto supermassive black holes at the nucleus of galaxies.

Research Products

• [Journal Article] ALMA resolves turbulent, rotating [CII] emission in a young starburst galaxy at z=4.8 (2014)
  • Author(s): C. De Breuck, R. Williams, M. Swinbank, P. Caselli, K. Coppin, T. Davis, R. Maiolino, T. Nagao, I. Smail, F. Walter, A. Weiss, and M. Zwaan
  • Journal Title: Astronomy and Astrophysics Volume: Volume565 Pages: A59-A59
  • DOI: 10.1051/0004-6361/201323331
  • Peer Reviewed
• [Journal Article] Metallicity evolution, metallicity gradients, and gas fractions at z~3.4 (2014)
  • Author(s): Troncoso, P.; Maiolino, R.; Sommariva, V.; Cresci, G.; Mannucci, F.; Marconi, A.; Meneghetti, M.; Grazian, A.; Cimatti, A.; Fontana, A.; Nagao, T.; Pentericci, L.
  • Journal Title: Astronomy and Astrophysics Volume: 563 Pages: A58-A58
  • DOI: 10.1051/0004-6361/201322099
  • Peer Reviewed
• [Journal Article] "Direct" Gas-phase Metallicities, Stellar Properties, and Local Environments of Emission-line Galaxies at Redshifts below 0.90 (2014)
  • Author(s): Ly, C. et al.
  • Journal Title: The Astrophysical Journal Volume: 780 Issue: 2 Pages: 122-149
  • DOI: 10.1088/0004-637x/780/2/122
  • Peer Reviewed
• [Journal Article] Flaring up of the compact cloud G2 during the close encounter with Sgr A* (2014)
  • Author(s): Saitoh, Takayuki R.; Makino, Junichiro; Asaki, Yoshiharu; Baba, Junichi; Komugi, Shinya; Miyoshi, Makoto; Nagao, Tohru; Takahashi, Masaaki; Takeda, Takaaki; Tsuboi, Masato; Wakamatsu, Ken-ichi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 66 Issue: 1 Pages: 1-9
  • DOI: 10.1093/pasj/pst003
  • Peer Reviewed
• [Journal Article] Extragalactic science, cosmology, and Galactic archaeology with the Subaru Prime Focus Spectrograph (2014)
  • Author(s): M. Takada, R. S. Ellis et al.
  • Journal Title: Publ. Astron. Soc. Japan Volume: 66 Issue: 1
  • DOI: 10.1093/pasj/pst019
  • NAID: 40020043379
  • Peer Reviewed
• [Journal Article] ALMA resolves turbulent, rotating [CII] emission in a young starburst galaxy at z=4.8 (2014)
  • Author(s): De Breuck, C.; Williams, R.; Swinbank, M.; Caselli, P.; Coppin, K.; Davis, T.; Maiolino, R.; Nagao, T.; Smail, I.; Walter, F.; Weiss, A.; and Zwaan, M.
  • Journal Title: Astronomy and Astrophysics Volume: 未定
  • Peer Reviewed
• [Journal Article] Strongly star-forming rotating disks in a complex merging system at z = 4.7 as revealed by ALMA (2013)
  • Author(s): Carniani, S.; Marconi, A.; Biggs, A.; Cresci, G.; Cupani, G.; D'Odorico, V.; Humphreys, E.; Maiolino, R.; Mannucci, F.; Molaro, P.; Nagao, T.; Testi, L.; Zwaan, M. A.
  • Journal Title: Astronomy and Astrophysics Volume: 559 Pages: A29-A29
  • DOI: 10.1051/0004-6361/201322320
  • Peer Reviewed
• [Journal Article] The Chemical Properties of Low-Redshift QSOs (2013)
  • Author(s): Shin, Woo, Nagao, and Kim
  • Journal Title: The Astrophysical Journal Volume: 763 Issue: 1 Pages: 58-58
  • DOI: 10.1088/0004-637x/763/1/58
  • Peer Reviewed
• [Journal Article] FIR-Submm metallicity diagnostics for high-z galaxies (2013)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Journal Title: ASP Conference Series Volume: Volume476 Pages: 29-29
  • URL: http://ads.nao.ac.jp/abs/2013ASPC..476...29N
• [Journal Article] Environmental Effects on Star Formation Activity at z = 0.9 in the COSMOS Field (2013)
  • Author(s): Kajisawa, M., et al.
  • Journal Title: The Astrophysical Journal Volume: 768 Issue: 1 Pages: 5163-5163
  • DOI: 10.1088/0004-637x/768/1/51
  • Peer Reviewed
• [Journal Article] A Comparative Analysis of Virial Black Hole Mass Estimates of Moderate-luminosity Active Galactic Nuclei Using Subaru/FMOS (2013)
  • Author(s): Matsuoka, K., et al.
  • Journal Title: The Astrophysical Journal Volume: 771 Issue: 1 Pages: 6472-6472
  • DOI: 10.1088/0004-637x/771/1/64
  • Peer Reviewed
• [Journal Article] A statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys (2013)
  • Author(s): Brightman, M., et al.
  • Journal Title: Mon. Not. Royal Astron. Astrophysics Volume: 433 Issue: 3 Pages: 24852496-24852496
  • DOI: 10.1093/mnras/stt920
  • Peer Reviewed
• [Journal Article] The FMOS-COSMOS Survey of Star-forming Galaxies at z ~ 1.6. I. Hα-based Star Formation Rates and Dust Extinction (2013)
  • Author(s): Kashino, D.
  • Journal Title: Astrophysical Journal Letters Volume: 777 Issue: 1 Pages: 8-8
  • DOI: 10.1088/2041-8205/777/1/l8
  • Peer Reviewed
• [Journal Article] FIR-Submm Metallicity Diagnostics for High-z Galaxies (2013)
  • Author(s): Nagao, T.; Maiolino, R.; De Breuck, C.; Caselli, P.; Hatsukade, B.; Saigo, K.
  • Journal Title: ASP Conference Series Volume: 476 Pages: 29-29
• [Journal Article] Accretion Properties of High- and Low-Excitation Young Radio Galaxies (2012)
  • Author(s): Son, Woo, Kim, Fu, Kawakatu, Bennert, Nagao, and Park
  • Journal Title: The Astrophysical Journal Volume: 757 Issue: 2 Pages: 140-140
  • DOI: 10.1088/0004-637x/757/2/140
  • Peer Reviewed
• [Journal Article] The Stellar Population and Star Formation Rates of z = 1.5-1.6 [O II]-emitting Galaxies Selected from Narrowband Emission-line Surveys (2012)
  • Author(s): Ly, C. et al.
  • Journal Title: The Astrophysical Journal Volume: 757 Issue: 1 Pages: 63-76
  • DOI: 10.1088/0004-637x/757/1/63
  • Peer Reviewed
• [Journal Article] Near-infrared spectroscopy of a nitrogen-loud quasar SDSS J1707+6443 (2012)
  • Author(s): Araki, N.
  • Journal Title: A&A Volume: 543 Pages: A143-A143
  • DOI: 10.1051/0004-6361/201118477
  • Peer Reviewed
• [Journal Article] Resolved [CII] Emission in a Lensed Quasar at z=4.4 (2012)
  • Author(s): Gallerani, Neri, Maiolino, Martin, De Breuck, Walter, Caselli, Krips, Meneghetti, Nagao, Wagg, and Walmsley
  • Journal Title: Astronomy and Astrophysics Volume: 543 Pages: A114-A114
  • DOI: 10.1051/0004-6361/201118705
  • Peer Reviewed
• [Journal Article] ALMA reveals a chemically evolved submillimeter galaxy at z = 4.76 (2012)
  • Author(s): Nagao, T., Maiolino, R., De Breuck, C., Caselli, P., Hatsukade, B., Saigo, K
  • Journal Title: Astronomy and Astrophysics Volume: Vol.542 Pages: L34-L34
  • DOI: 10.1051/0004-6361/201219518
  • Peer Reviewed
• [Journal Article] The Role of Interaction in Environmental Dependence of the Star Formation activity at z=1.2 (2012)
  • Author(s): 井手上祐子
  • Journal Title: The Astrophysical Journal Volume: 747 Issue: 1 Pages: 42-52
  • DOI: 10.1088/0004-637x/747/1/42
  • Peer Reviewed
• [Journal Article] Stellar metallicity of star-forming galaxies at z~3 (2012)
  • Author(s): V. Sommariva, F. Mannucci, G. Cresci, R. Maiolino, A. Marconi, T. Nagao, A. Baroni, and A. Grazian
  • Journal Title: Astronomy and Astrophysics Volume: Volume539 Pages: A136-A136
  • DOI: 10.1051/0004-6361/201118134
  • Peer Reviewed
• [Journal Article] Chemical properties of a high-z dusty star-forming galaxy from ALMA cycle 0 observations (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Journal Title: ESO Messenger Volume: Volume149 Pages: 44-44
  • URL: http://ads.nao.ac.jp/abs/2012Msngr.149...44N
• [Journal Article] Keck Spectroscopy of Lyman-break Galaxies and Its Implications for the UV-continuum and Ly alpha Luminosity Functions at z > 6 (2011)
  • Author(s): Jiang, L. et al.
  • Journal Title: The Astrophysical Journal Volume: 743 Issue: 1 Pages: 65-74
  • DOI: 10.1088/0004-637x/743/1/65
  • Peer Reviewed
• [Journal Article] Chemical properties in the most distant radio galaxy (2011)
  • Author(s): Kenta Matsuoka
  • Journal Title: Astronomy & Astrophysics Volume: 532 Pages: L10-L10
  • DOI: 10.1051/0004-6361/201117641
  • Peer Reviewed
• [Journal Article] A Census of Star-forming Galaxies at z = 1-3 in the Subaru Deep Field (2011)
  • Author(s): Ly, C. et al.
  • Journal Title: The Astrophysical Journal Volume: 735 Issue: 2 Pages: 91-115
  • DOI: 10.1088/0004-637x/735/2/91
  • Peer Reviewed
• [Journal Article] Completing the Census of Ly-alpha Emitters at the Reionization Epoch (2011)
  • Author(s): 柏川伸成
  • Journal Title: The Astrophysical Journal Volume: 734 Issue: 2 Pages: 119-137
  • DOI: 10.1088/0004-637x/734/2/119
  • Peer Reviewed
• [Journal Article] Enhanced [CII] emission in a z=4.76 sub-millimeter galaxy (2011)
  • Author(s): C. De Breuck, R. Maiolino, P. Caselli, K. Coppin, S. Halley-Dunsheath, and T. Nagao
  • Journal Title: Astronomy and Astrophysics Volume: Volume530 Pages: L8-L8
  • DOI: 10.1051/0004-6361/201116868
  • Peer Reviewed
• [Journal Article] Dynamical properties of AMAZE and LSD galaxies from gas kinematics and the Tully-Fisher relation at z~3 (2011)
  • Author(s): A. Gnerucci, A. Marconi, G. Cresci, R. Maiolino, F. Mannucci, F. Calura, A. Cimatti, F. Cocchaia, A. Grazian, F. Matteucci, T. Nagao, L. Pozzetti, and P. Troncoso
  • Journal Title: Astronomy and Astrophysics Volume: Volume528 Pages: A88-A88
  • DOI: 10.1051/0004-6361/201015465
  • Peer Reviewed
• [Journal Article] Spectropolarimetric Evidence for Radiatively Inefficient Accretion in an Optically Dull Active Galaxy (2011)
  • Author(s): J. Trump, T. Nagao, H. Ikeda, T. Murayama, C. Impey, J. Stocke, F. Civano, M. Elvis, K. Jahnke, B. Kelly, A. Koekemoer, Y. Taniguchi
  • Journal Title: The Astrophysical Journal Volume: 732 Issue: 1 Pages: 23-23
  • DOI: 10.1088/0004-637x/732/1/23
  • Peer Reviewed
• [Journal Article] Accretion Rate and the Physical Nature of Unobscured Active Galaxies (2011)
  • Author(s): J. Trump, C. Impey, B. Kelly, F. Civano, J. Gabor, A. Diamond-Stanic, A. Merloni, M. Urry, H. Hao, K. Jahnke, T. Nagao, et al.
  • Journal Title: The Astrophysical Journal Volume: 733 Issue: 1 Pages: 60-60
  • DOI: 10.1088/0004-637x/733/1/60
  • Peer Reviewed
• [Presentation] Extragalactic studies with ALMA archival data (2014)
  • Author(s): T. Nagao
  • Organizer: 日本天文学会2014年春期年会ALMA 特別セッション
  • Place of Presentation: 国際基督教大学
  • Year and Date: 2014-03-19
  • Invited
• [Presentation] Observational studies on super-massive black holes : Recent hot topics and the next steps (2014)
  • Author(s): T. Nagao
  • Organizer: 初代星初代銀河研究会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2014-01-24
  • Invited
• [Presentation] Synergy between Subaru and large surveys in 2020's : The case for high-z AGN/SMBH (2014)
  • Author(s): T. Nagao
  • Organizer: 研究会"2020年代の銀河サーベイ計画とすばる望遠鏡のシナジー"
  • Place of Presentation: 国立天文台三鷹
  • Year and Date: 2014-01-11
  • Invited
• [Presentation] Chemical evolution of AGNs : from oprical/NIR to FIR/Submm (2013)
  • Author(s): T. Nagao
  • Organizer: 研究会"SMBH-REC kick-off meeting 2013"
  • Place of Presentation: 愛媛大学
  • Year and Date: 2013-09-16
• [Presentation] Sub-mm view of high-z AGN hosts : their chemical evolution (2013)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, A. Marconi, K. Matsuoka, B. Hatsukade, and P. Caselli
  • Organizer: 国際研究会"East-Asia AGN Workshop 2013"
  • Place of Presentation: 北海道札幌市
  • Year and Date: 2013-08-21
• [Presentation] 高赤方偏移活動銀河核の広帯域近赤外分光観測 (2013)
  • Author(s): T. Nagao
  • Organizer: 研究会"TAO/SWIMS Science Workshop 2013"
  • Place of Presentation: 東京大学
  • Year and Date: 2013-08-05
  • Invited
• [Presentation] AGN Sciences : from Subaru to TMT (2013)
  • Author(s): T. Nagao
  • Organizer: 国際研究会"Thirty Meter Telescope Science Forum"
  • Place of Presentation: Waikoloa, Hawaii (USA)
  • Year and Date: 2013-07-22
  • Invited
• [Presentation] Chemical properties of active galactic nuclei (2013)
  • Author(s): T. Nagao, R. Maiolino, A. Marconi, and K. Matsuoka
  • Organizer: 国際研究会"Seeking the leading actor on the cosmic stage"
  • Place of Presentation: Castellammare del Golfo, Sicily (Italy)
  • Year and Date: 2013-06-24
  • Invited
• [Presentation] Probing the evolution of the physical and chemical properties of star-forming galaxies using SPICA/MCS (2013)
  • Author(s): T. Nagao, S. Oyabu, H. Inami, and T. Wada
  • Organizer: 国際研究会"From exoplanets to distant galaxies : SPICA's new window on the cool Universe"
  • Place of Presentation: 東京大学
  • Year and Date: 2013-06-18
• [Presentation] 銀河の遠赤外線スペクトルにおける微細構造輝線 (2013)
  • Author(s): T. Nagao
  • Organizer: 研究会"ALMA ミリ波サブミリ波観測で押さえる銀河の基本観測量とその理解"
  • Place of Presentation: 国立天文台三鷹
  • Year and Date: 2013-02-25
  • Invited
• [Presentation] ALMA studies on the galaxy chemical evolution in the high-z universe (2013)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Organizer: 研究会"ALMA 時代の宇宙の構造形成理論 : 第1世代から第n世代へ"
  • Place of Presentation: 北海道大学
  • Year and Date: 2013-01-26
  • Invited
• [Presentation] Probing the evolution of the physical and chemical properties of star-forming galaxies using SPICA/MCS (2013)
  • Author(s): T. Nagao, S. Oyabu, H. Inami, T. Wada, et al.
  • Organizer: 国際研究会 "From exoplanets to distant galaxies: SPICA's new window on the cool Universe"
  • Place of Presentation: 東京大学
• [Presentation] ALMA studies on the galaxy chemical evolution in the high-z universe (2013)
  • Author(s): Nagao, Maiolino, De Breuck, Caselli, Hatsukade, and Saigo
  • Organizer: 国立天文台ワークショップ「ALMA時代の宇宙の構造形成理論：第1世代から第n世代へ」
  • Place of Presentation: 北海道大学
  • Invited
• [Presentation] 銀河の遠赤外線スペクトルにおける微細構造輝線 (2013)
  • Author(s): Nagao
  • Organizer: 国立天文台ALMAワークショップ「ALMAミリ波サブミリ波観測で押さえる銀河の基本観測量とその理解」
  • Place of Presentation: 国立天文台三鷹
  • Invited
• [Presentation] ALMA reveals a chemically evolved sub-millimeter galaxy at z=4.76 (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Organizer: 国際研究会"First year of ALMA sciences"
  • Place of Presentation: Puerto Varas (Chile)
  • Year and Date: 2012-12-12
• [Presentation] FIR-Submm metallicity diagnostics for high-z galaxies (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Organizer: 国際研究会"New trends in radio astronomy in the ALMA era : The 30th anniversary of Nobeyama Radio Observatory"
  • Place of Presentation: 神奈川県箱根町
  • Year and Date: 2012-12-03
• [Presentation] すばる望遠鏡による活動銀河核探査の現状と今後 (2012)
  • Author(s): T. Nagao
  • Organizer: 研究会"銀河中心超巨大ブラックホールの起源"
  • Place of Presentation: 筑波大学
  • Year and Date: 2012-07-26
  • Invited
• [Presentation] FIR-Submm metallicity diagnostics for high-z galaxies (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, A. Marconi, B. Hatsukade, K. Saigo, and H. Matsuhara
  • Organizer: 国際研究会"European week of astronomy and space science : Symposium 1 : Molecular gas in high-z galaxies"
  • Place of Presentation: Pontifica Universita Lateranense, Rome (Italy)
  • Year and Date: 2012-07-02
• [Presentation] Metallicity diagnostics with fine-structure emission lines (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, A. Marconi, B. Hatsukade, K. Saigo, and H. Matsuhara
  • Organizer: 国際研究会"Metals in Tuscany 2012"
  • Place of Presentation: Abbazia di Spineto, Sarteano (Italy)
  • Year and Date: 2012-06-18
  • Invited
• [Presentation] ALMA reveals a chemically enriched submillimeter galaxy at z=4.76 (2012)
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Organizer: 研究会"ALMA high-z workshop"
  • Place of Presentation: 国立天文台三鷹
  • Year and Date: 2012-06-12
  • Invited
• [Presentation] ALMA revealing a chemically enriched submillimeter galaxy at z=4.76 (2012)
  • Author(s): Nagao, Hatsukade, Maiolino, De Breuck, Caselli, and Saigo
  • Organizer: ALMA high-z workshop
  • Place of Presentation: 国立天文台三鷹
  • Invited
• [Presentation] Metallicity diagnostics with fine-structure emission lines (2012)
  • Author(s): Nagao, Maiolino, De Breuck, Caselli, Marconi, Hatsukade, Saigo, and Matsuhara
  • Organizer: Workshop "Metals in Tuscany 2012"
  • Place of Presentation: Abbazia di Spineto, Italy
  • Invited
• [Presentation] FIR-Submm metallicity diagnostics for high-z galaxies (2012)
  • Author(s): Nagao, Maiolino, De Breuck, Caselli, Marconi, Hatsukade, Saigo, and Matsuhara
  • Organizer: European Week of Astronomy and Space Science: Symposium 1 "Molecular Gas in High-z Galaxies"
  • Place of Presentation: Pontificia Universita Kateranense, Rome, Italy
• [Presentation] すばる望遠鏡による活動銀河核探査の現状と今後 (2012)
  • Author(s): Nagao
  • Organizer: ワークショップ「銀河中心超巨大ブラックホールの起源」
  • Place of Presentation: 筑波大学
  • Invited
• [Presentation] Subaru Wide-Field AGN Survey Project (2012)
  • Author(s): Nagao
  • Organizer: AGN Workshop 2012 Jeju
  • Place of Presentation: Jeju, Republic of Korea
• [Presentation] ALMA reveals a chemically evolved sub-millimeter galaxy at z=4.76 (2012)
  • Author(s): Nagao, Hatsukade, Maiolino, De Breuck, Caselli, and Saigo
  • Organizer: 日本天文学会秋期年会 銀河形成セッション
  • Place of Presentation: 大分大学
• [Presentation] Observational studies on the chemical evolution of galaxies (2012)
  • Author(s): Nagao
  • Organizer: Korea-Japan Collaboration Workshop
  • Place of Presentation: Seoul National University, Republic of Korea
• [Presentation] ALMA reveals a chemically evolved sub-millimeter galaxy at z=4.76 (2012)
  • Author(s): Nagao, Hatsukade, Maiolino, De Breuck, Caselli, and Saigo
  • Organizer: ALMA Users Meeting
  • Place of Presentation: 国立天文台三鷹
• [Presentation] FIR-Submm metallicity diagnostics for high-z galaxies (2012)
  • Author(s): Nagao, Hatsukade, Maiolino, De Breuck, Caselli, and Saigo
  • Organizer: Symposium "New Trends in Radio Astronomy in the ALMA Era: The 30th Anniversary of Nobeyama Radio Observatory"
  • Place of Presentation: 神奈川県箱根町
• [Presentation] ALMA reveals a chemically evolved sub-millimeter galaxy at z=4.76 (2012)
  • Author(s): Nagao, Maiolino, De Breuck, Caselli, Hatsukade, and Saigo
  • Organizer: European Southern Observatory Conference "First Year of ALMA Science"
  • Place of Presentation: Puerto Varas, Chile
• [Presentation] Gas-phase Ne and Ar abundance ratio in star-forming galaxies (2011)
  • Author(s): T. Nagao, and N. Tominaga
  • Organizer: 日本天文学会2011年秋期年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-21
• [Presentation] Metallicity evolution of active galactic nuclei (2011)
  • Author(s): T. Nagao, R. Maiolino, A. Marconi, K. Matsuoka, and N. Araki
  • Organizer: 国際研究会"Starburst-AGN connection under the multiwavelength limelight"
  • Place of Presentation: European Space Agency, Madrid (Spain)
  • Year and Date: 2011-09-16
• [Presentation] AO sciences on active galactic nuclei (2011)
  • Author(s): T. Nagao
  • Organizer: 研究会"Subaru next-generation AO workshop"
  • Place of Presentation: 大阪大学
  • Year and Date: 2011-09-09
  • Invited
• [Presentation] Subaru Wide-Field AGN Survey with SuMIRe = HSC + PFS (2011)
  • Author(s): Tohru Nagao
  • Organizer: PFS international collaboration workshop
  • Place of Presentation: 東京大学数物連携宇宙研究機構
• [Presentation] AO Sciences on Active Galactic Nuclei (2011)
  • Author(s): Tohru Nagao
  • Organizer: Subaru Next-Generation AO Workshop(招待講演)
  • Place of Presentation: 大阪大学
• [Presentation] Metallicity Evolution of Active Galactic Nuclei (2011)
  • Author(s): T. Nagao, R. Maiolino, A. Marconi, K. Matsuoka, N. Araki
  • Organizer: Starburst-AGN Connection under the Multiwavelength Limelight
  • Place of Presentation: 欧州宇宙機構（マドリード）
• [Presentation] Gas-Phase Ne and Ar Abundance Ratio in Star-Forming Galaxies (2011)
  • Author(s): T. Nagao, N. Tominaga
  • Organizer: Annual Meeting of the Astronomical Society of Japan
  • Place of Presentation: 鹿児島大学
• [Presentation] 宇宙化学進化の観測的研究 (2011)
  • Author(s): Tohru Nagao
  • Organizer: Annual Meeting of the Astronomical Society of Japan(招待講演)
  • Place of Presentation: 鹿児島大学
• [Presentation] Chemical Properties of Active Galactic Nuclei
  • Author(s): T. Nagao, R. Maiolino, A. Marconi, K. Matsuoka
  • Organizer: 国際研究会 “Seeking the Leading Actor on the Cosmic Stage”
  • Place of Presentation: Castellammare del Golfo, Sicily (Italy)
  • Invited
• [Presentation] AGN Sciences: from Subaru to TMT
  • Author(s): T. Nagao
  • Organizer: 国際研究会 “Thirty Meter Telescope Science Forum”
  • Place of Presentation: Waikoloa, Hawaii (USA)
  • Invited
• [Presentation] 高赤方偏移活動銀河核の広帯域近赤外分光観測
  • Author(s): T. Nagao
  • Organizer: ワークショップ “TAO/SWIMS Science Workshop 2013”
  • Place of Presentation: 東京大学
  • Invited
• [Presentation] Sub-mm views of high-z AGN hosts: their chemical evolution
  • Author(s): T. Nagao, R. Maiolino, C. De Breuck, A. Marconi, K. Matsuoka, B. Hatsukade, P. Caselli
  • Organizer: 国際研究会 “East-Asia AGN Workshop 2013”
  • Place of Presentation: 北海道札幌市
• [Presentation] QSO/AGN Studies with HSC
  • Author(s): T. Nagao
  • Organizer: 研究会 “HSC collaboration meeting 2013”
  • Place of Presentation: 国立天文台三鷹
• [Presentation] AGN Sciences with MICHI
  • Author(s): T. Nagao
  • Organizer: ワークショップ “TMT-MICHI killer science workshop”
  • Place of Presentation: 東京大学
• [Presentation] Chemical Evolution of AGNs: from Optical/NIR to FIR/Submm
  • Author(s): T. Nagao
  • Organizer: 研究会 “SMBH-REC kick-off meeting 2013”
  • Place of Presentation: 愛媛大学
• [Presentation] Synergy between Subaru and large surveys in 2020’s: The case for high-z AGN/SMBH
  • Author(s): T. Nagao
  • Organizer: 研究会 “2020年代の銀河サーベイ計画とすばる望遠鏡とのシナジー”
  • Place of Presentation: 国立天文台三鷹
  • Invited
• [Presentation] Observational Studies on Super-massive Black Holes: Recent Hot Topics and the Next Steps
  • Author(s): T. Nagao
  • Organizer: 研究会 “初代星初代銀河研究会”
  • Place of Presentation: 鹿児島大学
  • Invited
• [Presentation] Extragalactic Studies with ALMA Archival Data
  • Author(s): T. Nagao
  • Organizer: 日本天文学会2014年春季年会ALMA特別セッション
  • Place of Presentation: 国際基督教大学
  • Invited