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

2013 Fiscal Year Final Research Report

• 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
• 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

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
  • DOI: 10.1051/0004-6361/201323331
  • Peer Reviewed
• [Journal Article] Metallicity evolution, metallicity grtadients, and gas fraction at z~3.4 (2014)
  • Author(s): P. Troncoso, R. Maiolino, V. Sommariva, G. Cresci, F. Mannucci, A. Marconi, M. Meneghetti, A. Grazian, A. Cimatti, A. Fontana, T. Nagao, and L. Pentericci
  • Journal Title: Astronomy and Astrophysics Volume: Volume563 Pages: 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): C. Ly, M. Malkan, T. Nagao, N. Kashikawa, K. Shimasaku, and M. Hayashi
  • Journal Title: The Astrophysical Journal Volume: Volume780 Pages: 122
  • DOI: 10.1088/0004-637X/780/2/122
  • 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): S. Carniani, A. Marconi, A. Biggs, G. Cresci, V. D'Odorico, E. Humphreys, R. Maiolino, P. Molaro, T. Nagao, L. Testi, and M. Zwaan
  • Journal Title: Astronomy and Astrophysics Volume: Volume559 Pages: A29
  • DOI: 10.1051/0004-6361/201322320
  • Peer Reviewed
• [Journal Article] The chemical properties of low-redshift QSOs (2013)
  • Author(s): J. Shin, J. Woo, T. Nagao, and S. Kim
  • Journal Title: The Astrophysical Journal Volume: Volume763 Pages: 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
  • URL: http://ads.nao.ac.jp/abs/2013ASPC..476...29N
• [Journal Article] Accretion properties of high- and low-excitation young radio galaxies (2012)
  • Author(s): D. Son, J. Woo, S. Kim, H. Fu, N. Kawakatu, V. Bennert, T. Nagao, and D. Park
  • Journal Title: The Astrophysical Journal Volume: Volume757 Pages: 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 [OII]-emitting galaxies selected from narrow-band emission-line surveys (2012)
  • Author(s): C. Ly, M. Malkan, N. Kashikawa, M. Hayashi, T. Nagao, K. Shimasaku, K. Ohta, and N. Ross
  • Journal Title: The Astrophysical Journal Volume: Volume757 Pages: 63
  • 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): N. Araki, T. Nagao, K. Matsuoka, A. Marconi, R. Maiolino, H. Ikeda, T. Hashimoto, Y. Taniguchi, and T. Murayama
  • Journal Title: Astronomy and Astrophysics Volume: Volume543 Pages: A143
  • DOI: 10.1051/0004-6361/201118477
  • Peer Reviewed
• [Journal Article] Resolved [CII] emission in a lensed quasar at z=4.44 (2012)
  • Author(s): S. Gallerani, R. Neri, R. Maiolino, S. Martin, C. De Breuck, F. Walter, P. Caselli, M. Krips, M. Meneghetti, T. Nagao, J. Wagg, and M. Walmsley
  • Journal Title: Astronomy and Astrophysics Volume: Volume543 Pages: 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): T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade, and K. Saigo
  • Journal Title: Astronomy and Astrophysics Volume: Volume542 Pages: L34
  • DOI: 10.1051/0004-6361/201219518
  • Peer Reviewed
• [Journal Article] The role of galaxy interaction in environmental dependence of the star-formation activity at z=1.2 (2012)
  • Author(s): Y. Ideue, Y. Taniguchi, T. Nagao, Y. Shioya, M. Kajisawa, J. Trump, D. Vergani, A. Iovino, A. Koekemoer, O. Le Fevre, O. Ilbert, and N. Scoville
  • Journal Title: The Astrophysical Journal Volume: Volume747 Pages: 42
  • 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
  • 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
  • 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 α luminosity functions at z>6 (2011)
  • Author(s): L. Jiang, E. Egami, N. Kashikawa, G. Walth, Y. Matsuda, K. Shimasaku, T. Nagao, K. Ota, and M. Ouchi
  • Journal Title: The Astrophysical Journal Volume: Volume743 Pages: 65
  • DOI: 10.1088/0004-637X/743/1/65
  • Peer Reviewed
• [Journal Article] Chemical properties of the most distant radio galaxy (2011)
  • Author(s): K. Matsuoka, T. Nagao, R. Maiolino, A. Marconi, and Y. Taniguchi
  • Journal Title: Astronomy and Astrophysics Volume: Volume532 Pages: 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): C. Ly, M. Malkan, M. Hayashi, K. Motohara, N. Kashikawa, K. Shimasaku, T. Nagao, and C. Grady
  • Journal Title: The Astrophysical Journal Volume: Volume735 Pages: 91
  • DOI: 10.1088/0004-637X/735/2/91
  • Peer Reviewed
• [Journal Article] Completing the census of Ly α emitters at the reionization epoch (2011)
  • Author(s): N. Kashikawa, K. Shimasaku, Y. Matsuda, E. Egami, K. Jiang, T. Nagao, M. Ouchi, M. Malkan, T. Hattori, K. Ota, Y. Taniguchi, S. okamura, C. Ly, M. Iye, H. Furusawa, Y. Shioya, T. Shibuya, Y. Ishizaki, and J. Toshikawa
  • Journal Title: The Astrophysical Journal Volume: Volume734 Pages: 119
  • 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
  • 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
  • DOI: 10.1051/0004-6361/201015465
  • 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] 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] 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