NAGAO, Toru

Faculty
Research Center for Space and Cosmic Evolution
PositionProfessor
Mail
HomepageURL
Birthday
Last Updated :2017/11/19

Researcher Profile and Settings

Education

  •  - 2001 , Tohoku University, Graduate School, Division of Natural Science, Astronomical Institute
  •  - 2004 , Tohoku University, Graduate School, Division of Natural Science, Astronomical Institute
  •  - 1999 , Tohoku University, Faculty of Science, Astronomical Institute

Academic & Professional Experience

  • Former Institution / Organization Ehime University Graduate School of Science and Engineering Mathematics, Physics, and Earth Sciences, Assistant Professor
  •   2010 , - National Astronomical Observatory of Japan
  •   2008 , - Department of Physics, Graduate School of Science and Engineering, Ehime University
  •   2005 ,  - 2008 ,  National Astronomical Observatory of Japan
  •   2004 ,  - 2006 ,  INAF -- Osservatorio Astrofisico di Arcetri
  •   2003 ,  - 2005 ,  Astronomical Institute, Graduate School of Science, Tohoku University

Association Memberships

  • Astronomical Society of Japan
  • International Astronomical Union

Research Activities

Research Interests

    Astrophysics, Galaxy Formation, Galaxy Evolution, Supermassive Black Hole, Chemical Evolution, Photoionization Model

Misc

  • Extended High-Ionization Nuclear Emission-Line Region in the Seyfert Galaxy NGC 4051
    The Astronomical Journal, 119,   2000
  • Discovery of a Low Surface Brightness Object near Seyfert’s Sextet
    The Astronomical Journal, 119,   2000
  • High-Ionization Nuclear Emission-Line Region of Seyfert Galaxies
    The Astronomical Journal, 119,   2000
  • Deep Optical Imaging of a Compact Group of Galaxies, Seyfert’s Sextet
    The Astronomical Journal, 120,   2000
  • The Narrow-Line Region of Seyfert Galaxies: Narrow-Line Seyfert 1 Galaxies versus Broad-Line Seyfert 1 Galaxies
    The Astrophysical Journal, 546,   2001
  • Where is the [OIII]λ4363 Emitting Region in Active Galactic Nuclei?
    The Astrophysical Journal, 549,   2001
  • Seyfert-Type Dependences of Narrow Emission-Line Ratios and Physical Properties of High-Ionization Nuclear Emission-Line Regions in Seyfert Galaxies
    Publication of the Astronomical Society of Japan, 53,   2001
  • A Shock-Induced Pair of Superbubbles in the High-z Powerful Radio Galaxy MRC 0406-224
    The Astrophysical Journal, 559,   2001
  • Multi-Band Photometric Study of Tidal Debris in a Compact Group of Galaxies: Seyfert’s Sextet
    Publication of the Astronomical Society of Japan, 54,   2002
  • Is There an Advection-Dominated Accretion Flow in Radio Galaxies with Double-Peaked Balmer Lines?
    The Astrophysical Journal, 567,   2002
  • Gas Metallicity of Narrow-Line Regions in Narrow-Line Seyfert 1 Galaxies and Broad-Line Seyfert 1 Galaxies
    The Astrophysical Journal, 575,   2002
  • Effects of a Burst of Formation of First-Generation Stars on the Evolution of Galaxies
    The Astrophysical Journal, 576,   2002
  • A New High-Redshift Superwind Galaxy at z=5.69
    The Astrophysical Journal, 576,   2002
  • SDSSpJ104433.04-012502.2 at z=5.74 is Gravitationally Magnified by an Intervening Galaxy
    Publication of the Astronomical Society of Japan, 54,   2002
  • A Search for Lymanα Emitters at Redshift 3.7
    The Astronomical Journal, 125,   2003
  • Iron is not Depleted in High-Ionization Nuclear Emission-Line Regions of Active Galactic Nuclei
    The Astronomical Journal, 125,   2003
  • The Discovery of a Very Narrow-Line Star Forming Object at a Redshift of 5.66
    The Astrophysical Journal, 585,   2003
  • The Hα Luminosity Function and Star Formation Rate at z=0.24 Based on Subaru Deep Imaging
    The Astrophysical Journal, 586,   2003
  • The Discovery of Two Lymanα Emitters beyond Redshift 6 in he Subaru Deep Field
    Publication of the Astronomical Society of Japan, 55,   2003
  • On the Origin of Lymanα Blobs at High Redshift: Kinematic Evidence for a Hyperwind Galaxy at z=3.1
    The Astrophysical Journal, 591,   2003
  • Are Two z=6 Quasars Gravitationally Lensed?
    Publication of the Astronomical Society of Japan, 55,   2003
  • Subaru High-Dispersion Spectroscopy of Narrow-Line Region in Seyfert Galaxy NGC 4151
    The Astronomical Journal, 126,   2003
  • A Subaru Search for Lymanα Emitters at Redshift 5.7
    The Astronomical Journal, 126,   2003
  • The Hα Luminosity Function of the Galaxy Cluster Abell 521 at z=0.25
    The Astrophysical Journal, 601,   2004
  • Detection of Polarized Broad Emission in the Seyfert 2 Galaxy Mrk 573
    The Astronomical Journal, 128,   2004
  • A Subaru Search for Lyα Blobs in and around the Proto-Cluster Region at Redshift z=3.1
    The Astronomical Journal, 128,   2004
  • A Subaru Search for Lymanα Emitters at z=5.8 with an Intermediate-Band Filter
    Publication of the Astronomical Society of Japan, 56,   2004
  • Subaru Spectropolarimetry of Mrk573: The Hidden High-Ionization Nuclear Emission-Line Region inside the Dusty Torus
    The Astronomical Journal, 128,   2004
  • Large-Scale Structure of Emission-Line Galaxies at Redshift 3.1
    The Astronomical Journal, 128,   2004
  • A Strong Lymanα Emitter at z=6.33 in the Subaru Deep Field Selected as an i-Dropout
    The Astrophysical Journal, 613,   2004
  • The Subaru Deep Field: The Optical Imaging Data
    Publication of the Astronomical Society of Japan, 56,   2004
  • The Subaru Deep Field Project: Lymanα Emitters at Redshift of 6.6
    Publication of the Astronomical Society of Japan, 57,   2005
  • The Intermediate-band Dropout Method: A New Method to Search for High-Redshift Galaxies
    Publication of the Astronomical Society of Japan, 57,   2005
  • New High-Redshift Galaxies at z=5.8-6.5 in the Subaru Deep Field
    Publication of the Astronomical Society of Japan, 57,   2005
  • First Detection of [CII]158 micron at High Redshift: Vigorous Star Formation in the Early Universe
    Astronomy and Astrophysics, 440,   2005
  • An Observational Pursuit for Population III Stars in a Lyα Emitter through HeII Emission
    The Astrophysical Journal, 631,   2005
  • A Survey of NB921-Dropouts in the Subaru Deep Field
    Publication of the Astronomical Society of Japan, 57,   2005
  • Spectroscopy of i-Dropout Galaxiesa with an NB921-Band Depression in the Subaru Deep Field
    The Astrophysical Journal, 634,   2005
  • An Intermediate-band Imaging Survey for High-redshift Lymanα Emitters: The Mahoroba11
    Publication of the Astronomical Society of Japan, 57,   2005
  • Large-Scale Filamentary Structure around the Proto-Cluster at Redshift z=3.1
    The Astrophysical Journal, 634,   2005
  • Type I ULIRGs: Transition Stage from ULIRGs to QSOs
    The Astrophysical Journal, 637,   2006
  • Clustering of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Field: Luminosity Dependence of the Correlation Function Slope
    The Astrophysical Journal, 637,   2006
  • Narrow-Band Survey of the GOODS Fields: Search for Lymanα Emitters at z=5.7
    The Astrophysical Journal, 638,   2006
  • Strong Emission Line Galaxies at Low Redshift in the Field around SDSS J104433.04-012502.2
    Publication of the Astronomical Society of Japan, 58,   2006
  • The Evolution of the Broad-Line Region among SDSS Quasars
    Astronomy and Astrophysics, 447,   2006
  • Gas Metallicity of Narrow-Line Regions in High-Redshift Active Galactic Nuclei
    Astronomy and Astrophysics, 447,   2006
  • Lyα Emitters at z=5.7 in the Subaru Deep Field
    Publication of the Astronomical Society of Japan, 58,   2006
  • New Corroborative Evidence for the Overdensity of Galaxies around the Radio-Loud Quasar SDSS J0836+0054 at z=5.8
    Publication of the Astronomical Society of Japan, 58,   2006
  • The End of the Dark Age Proved by Lyman Alpha Emitters at z=6.5 in the Subaru Deep Field
    The Astrophysical Journal, 648,   2006
  • Gas Metallicity Diagnostics in Star-Forming Galaxies
    Astronomy and Astrophysics, 459,   2006
  • Luminosity Function of Lyman-Break Galaxies at z=4 and 5 in the Subaru Deep Field
    The Astrophysical Journal, 653,   2006
  • The Luminosity Function and Star Formation Rate between Redshifts of 0.07 and 1.47 for Narrow-Band Emitters in the Subaru Deep Fiel
    The Astrophysical Journal, 657,   2007
  • The HI Content of Star-Forming Galaxies at z=0.2
    Monthly Notices of the Royal Astronomical Society, 376,   2007
  • Anti-correlation between a Mass Accretion Rate and a Supermassive Black Hole Mass for Type I Ultra-luminous Infrared Galaxies and QSOs
    The Astrophysical Journal, 661,   2007
  • The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field
    The Astrophysical Journal Supplement Series, 172, (1) 9 - 28,   2007
  • The First Release COSMOS Optical and Near-IR Data and Catalog
    The Astrophysical Journal Supplement Series, 172, (1) 99 - 116,   2007
  • The Cosmic Evolution Survey (COSMOS): A Large-Scale Structure at z=0.73 and the Relation of Galaxy Morphologies to Local Environment
    The Astrophysical Journal Supplement Series, 172, (1) 254 - 269,   2007
  • The [OII]3727 Luminosity Function and Star Formation Rate at z=1.2 in the COSMOS 2 Square-degree Field and the Subaru Deep Field
    The Astrophysical Journal Supplement Series, 172, (1) 456 - 467,   2007
  • A Potential Galaxy Threshing System in the HST COSMOS Field
    The Astrophysical Journal Supplement Series, 172, (1) 511 - 517,   2007
  • Radio and Millimeter Properties of z=5.7 Lyα Emitters in the COSMOS Field: Limits in Radio AGN, Submm Galaxies, and Dust Obscuration
    The Astrophysical Journal Supplement Series, 172, (1) 518 - 522,   2007
  • Lyman α Emitters at Redshift 5.7 in the COSMOS Field
    The Astrophysical Journal Supplement Series, 172, (1) 523 - 544,   2007
  • High-Redshift Lyman_alpha Emitters with a Large Equivalent Width: Properties of i-Dropout Galaxies with an NB921-Band Depression in the Subaru Deep Field
    Astronomy and Astrophysics, 463,   2007
  • Molecular Gas in QSO Host Galaxies at z>5
    Astronomy and Astrophysics, 472,   2007
  • The Subaru/XMM-Newton Deep Survey (SXDS). VI. Properties of Active Galactic Nuclei Selected by Optical Variability
    The Astrophysical Journal, 676,   2008
  • The Subaru/XMM-Newton Deep Survey (SXDS). V. Optically Faint Variable Object Survey
    The Astrophysical Journal, 676,   2008
  • The H_alpha Luminosity Function and Star-Formation Rate at z=0.24 in the COSMOS 2 Square Degree Field
    The Astrophysical Journal Supplement Series, 175, (1) 128 - 137,   2008
  • The Effect of Radiation Pressure on Virial Black Hole Mass Estimates and the Case of Narrow-Line Seyfert 1 Galaxies
    The Astrophysical Journal, 678,   2008
  • A Photometric Survey for Ly_alpha - He II Dual Emitters: Searching for Population III Stars in High-Redshift Galaxies
    The Astrophysical Journal, 680,   2008
  • AMAZE. I. The Evolution of the Mass-Metallicity Relation at z>3
    Astronomy and Astrophysics, 488,   2008
  • Clustering Properties of Low-Luminosity Star-Forming Galaxies at z=0.24 and 0.40 in the Subaru Deep Field
    Publication of the Astronomical Society of Japan, 60,   2008
  • The Metallicity of the Most Distant Quasars
    Astronomy and Astrophysics, 494,   2009
  • Exploring the Disk-Jet Connection from the Properties of Narrow-Line Regions in Powerful Young Radio Galaxies
    The Astrophysical Journal, 693,   2009
  • A Search for Molecular Gas toward a BzK-selected Star-Forming Galaxy at z=2.044
    Publication of the Astronomical Society of Japan, 61,   2009
  • Photometric Properties of Ly_alpha Emitters at z=4.86 in the COSMOS 2 Square Degree Field
    The Astrophysical Journal, 696,   2009
  • Strong [CII] Emission at High Redshift
    Astronomy and Astrophysics, 500,   2009
  • On the Observed Distribution of Black Hole Masses and Eddington Ratios from Radiation Pressure Corrected Virial Indicators
    The Astrophysical Journal, 698,   2009
  • Observational Limits on Type 1 AGN Accretion Rate in COSMOS
    The Astrophysical Journal, 700,   2009
  • Environmental effect on the Star Formation Activity in Galaxies at z ∼ 1.2 in the COSMOS Field
    The Astrophysical Journal, 700,   2009
  • HST/ACS Morphology of Lyman alpha Emitters at Redshift 5.7 in the COSMOS Field
    The Astrophysical Journal, 701,   2009
  • Chemical Evolution of High-Redshift Radio Galaxies
    Astronomy and Astrophysics, 503,   2009
  • The Nature of Optically Dull Active Galactic Nuclei in COSMOS
    The Astrophysical Journal, 706,   2009
  • The Extinction Law at High Redshift and Its Implications
    Astronomy and Astrophysics, in press,   2010

Awards & Honors

  •   2005 , The PASJ Excellent Paper Award


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