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2020 Fiscal Year Annual Research Report

The emergence of the supermassive black hole-galaxy mass relations at z > 1

Research Project

Project/Area Number 18H01251
Research InstitutionThe University of Tokyo

Principal Investigator

SILVERMAN John  東京大学, カブリ数物連携宇宙研究機構, 准教授 (90573030)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywordssupermassive black holes / galaxy evolution / HST
Outline of Annual Research Achievements

We have completed our study (i.e., main aim of the program) of the properties of the host galaxies of quasars up to z ~ 2. This includes a determination of the relation between black hole mass and the stellar mass of their host galaxies. We find that the mass ratio is nearly constant (i.e., non-evolving) over the last 8 billion years of the universe. This required the development of software tools (Galight) to decompose the quasar and host galaxy emission using optical and near-infrared imaging from the Hyper Supreme-Cam Subaru Strategic program (HSC-SSP) and the Hubble Space Telescope. We also find for the first time that the dispersion in the mass ratio is nearly constant and in agreement with most cosmological simulations which include quasar feedback to regulate their joint mass growth. In addition, we have studied an important population of dual quasars from the HSC-SSP survey which elucidates their frequency and galaxy properties. Our 2D image modeling has further allowed us to study non-axisymmetric structures (e.g., spiral arms, bars, rings) within quasar host galaxies which may play a role in fueling supermassive black holes since galaxy mergers are found to be subdominant. Overall, we have published numerous papers from this study which then supported an accepted program with the James Webb Space Telescope to measure the mass ratios at z~6.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

  • Research Products

    (15 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 10 results,  Open Access: 10 results) Presentation (4 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Int'l Joint Research] Princeton University/University of California, Los Angeles(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Princeton University/University of California, Los Angeles
  • [Journal Article] A Machine-learning Approach to Assessing the Presence of Substructure in Quasar-host Galaxies Using the Hyper Suprime-cam Subaru Strategic Program2023

    • Author(s)
      Nagele Chris、Silverman John D.、Hartwig Tilman、Li Junyao、Bottrell Connor、Ding Xuheng、Toba Yoshiki
    • Journal Title

      The Astrophysical Journal

      Volume: 947 Pages: 30~30

    • DOI

      10.3847/1538-4357/acbd4a

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inferences on Relations between Distant Supermassive Black Holes and Their Hosts Complemented by the Galaxy Fundamental Plane2022

    • Author(s)
      Silverman John D.、Li Junyao、Ding Xuheng
    • Journal Title

      The Astrophysical Journal

      Volume: 933 Pages: 165~165

    • DOI

      10.3847/1538-4357/ac7648

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Concordance between Observations and Simulations in the Evolution of the Mass Relation between Supermassive Black Holes and Their Host Galaxies2022

    • Author(s)
      Ding Xuheng、Silverman John D.、Treu Tommaso、Li Junyao、Bhowmick Aklant K.、Menci Nicola、Volonteri Marta、Blecha Laura、Matteo Tiziana Di、Dubois Yohan
    • Journal Title

      The Astrophysical Journal

      Volume: 933 Pages: 132~132

    • DOI

      10.3847/1538-4357/ac714c

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the Connection between Supermassive Black Holes and Galaxy Growth in the Reionization Epoch2022

    • Author(s)
      Li Junyao、Silverman John D.、Izumi Takuma、He Wanqiu、Akiyama Masayuki、Inayoshi Kohei、Matsuoka Yoshiki、Onoue Masafusa、Toba Yoshiki
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 931 Pages: L11~L11

    • DOI

      10.3847/2041-8213/ac6de8

    • 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-Cam2021

    • 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 Pages: 142~142

    • DOI

      10.3847/1538-4357/ac2301

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program2021

    • Author(s)
      Tang Shenli、Silverman John D.、Ding Xuheng、and 31 co-authors
    • Journal Title

      The Astrophysical Journal

      Volume: 922 Pages: 83~83

    • DOI

      10.3847/1538-4357/ac1ff0

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hyper Suprime-Cam Subaru Strategic Program: A Mass-dependent Slope of the Galaxy Size-Mass Relation at z < 12021

    • Author(s)
      Kawinwanichakij Lalitwadee、Silverman John D.、Ding Xuheng、George Angelo、Damjanov Ivana、Sawicki Marcin、Tanaka Masayuki、Taranu Dan S.、Birrer Simon、Huang Song、Li Junyao、Onodera Masato、Shibuya Takatoshi、Yasuda Naoki
    • Journal Title

      The Astrophysical Journal

      Volume: 921 Pages: 38~38

    • DOI

      10.3847/1538-4357/ac1f21

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Sizes of Quasar Host Galaxies in the Hyper Suprime-Cam Subaru Strategic Program2021

    • 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 Pages: 22~22

    • DOI

      10.3847/1538-4357/ac06a8

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dual Supermassive Black Holes at Close Separation Revealed by the Hyper Suprime-Cam Subaru Strategic Program2020

    • Author(s)
      Silverman John D.、Tang Shenli、Lee Khee-Gan and 30 co-authors
    • Journal Title

      The Astrophysical Journal

      Volume: 899 Pages: 154~154

    • DOI

      10.3847/1538-4357/aba4a3

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Testing the Fidelity of Simulations of Black Hole-Galaxy Coevolution at z ~1.5 with Observations2020

    • Author(s)
      Ding Xuheng、Treu Tommaso、Silverman John D.、Bhowmick Aklant K.、Menci N.、Di Matteo Tiziana
    • Journal Title

      The Astrophysical Journal

      Volume: 896 Pages: 159~159

    • DOI

      10.3847/1538-4357/ab91be

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Quasars are signposts of bulges in formation2022

    • Author(s)
      John Silverman
    • Organizer
      Galaxy evolution meeting in Crete
    • Int'l Joint Research
  • [Presentation] Dual supermassive black holes from the Hyper Suprime-Cam Subaru Strategic Survey2022

    • Author(s)
      John Silverman
    • Organizer
      Black Hole Astrophysics with the VLBI
    • Int'l Joint Research / Invited
  • [Presentation] Massive galaxies and their supermassive black holes2021

    • Author(s)
      John Silverman
    • Organizer
      University of Victoria, Colloquium
    • Int'l Joint Research / Invited
  • [Presentation] Quasar host galaxies with the Hyper Suprime-Cam Subaru Strategic program, a precursor for LSST2021

    • Author(s)
      John Silverman
    • Organizer
      LSST AGN Workshop
    • Int'l Joint Research

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Published: 2023-12-25  

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