Growth history of supermassive black holes probed by eROSITA, Subaru, and Seimei Telescope

• Project/Area Number: 19K14759
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 16010:Astronomy-related
• Research Institution: Kyoto University
• Principal Investigator: Yoshiki Toba 京都大学, 理学研究科, 研究員 (40825957)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Project Status: Discontinued (Fiscal Year 2022)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 超巨大ブラックホール / すばる望遠鏡 / eROSITA衛星 / NuSTAR衛星 / SOFIA天文台 / すばるHSC / せいめい望遠鏡 / 銀河合体 / 赤外線天文衛星「あかり」 / 活動銀河核ダストトーラス / 天文学 / 多波長観測 / eROSITA

Outline of Research at the Start

宇宙の基本的な構成要素である銀河の中心部には、太陽の100万から10億倍もの質量を持つ超巨大ブラックホールかほぼ普遍的に存在する。しかし、宇宙の歴史の中で超巨大ブラックホールがどのように質量を獲得し成長してきたのかは未だに分かっていない。本研究では、特に活動度の高い超巨大ブラックホールに着目し、今年度打ち上げを予定している eROSITA衛星によるエックス線テータや、日本の「すばる」望遠鏡、そして本格始動したばかりの京都大学「せいめい」望遠鏡から得られる撮像・分光データを総動員することで、超巨大ブラックホールの成長史の解明を目指す。

Outline of Final Research Achievements

In order to reveal the growth history of supermassive black holes (SMBHs), which are ubiquitous in the universe, we conducted a systematic search for active galactic nuclei (AGN) with various evolutionary stages and investigated their physical properties. By utilizing multi-wavelength data taken from Hyper Suprime-Cam on Subaru telescope (optical), eROSITA (X-ray), WISE (infrared), and VLA/FIRST (radio), we successfully identified AGN in a wide range of evolutionary stages from the growing to the mature phase of their growth. We also succeeded in estimating the physical quantities of these objects from the spectral energy distribution. These results were reported in a total of six referred papers I led.

Academic Significance and Societal Importance of the Research Achievements

この研究から、宇宙にはこれまで見落とされてきたようなさまざまな成長段階にある超巨大ブラックホールを宿す銀河が存在することを確認できた点で意義深い。また、すばるHSCチームとeROSITAチームとの国際共同研究により、データの一般公開に先駆けて研究成果を発表できた点も大きい。
超巨大ブラックホールは社会的にも関心の大きいトピックであるため、一般講演などで観測成果をわかりやすく伝える活動を通じて、得られた知見を社会に還元するようにも努めた。

Research Products

• [Int'l Joint Research] マックス・プランク地球外物理学研究所 (MPE)/ポツダム天体物理天文台 (AIP)(ドイツ)
• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] 中央研究院天文及天文物理研究 所 (ASIAA)/国立清華大学 (NTHU)(台湾)
• [Int'l Joint Research] ボローニャ大学(イタリア)
• [Int'l Joint Research] アテネ国立天文台(ギリシャ)
• [Int'l Joint Research] 中央研究院天文及天文物理研究 所 (ASIAA)/国立清華大学 (NTHU)(台湾)
• [Int'l Joint Research] マックス・プランク地球外物理 学研究所 (MPE)(ドイツ)
• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] サウサンプトン大学(英国)
• [Int'l Joint Research] ディエゴ・ポルタレス大学(チリ)
• [Int'l Joint Research] 中央研究院天文及天文物理研究所 (ASIAA)(台湾)
• [Int'l Joint Research] マックス・プランク地球外物理学研究所 (MPE)(ドイツ)
• [Int'l Joint Research] プリンストン大学(米国)
• [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] Galaxy morphologies revealed with Subaru HSC and super-resolution techniques. I. Major merger fractions of LUV~3-15 L*UV dropout galaxies at z~4-7 (2022)
  • Author(s): Shibuya Takatoshi、Miura Noriaki、Iwadate Kenji、Fujimoto Seiji、Harikane Yuichi、Toba Yoshiki、Umayahara Takuya、Ito Yohito
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 1 Pages: 73-91
  • DOI: 10.1093/pasj/psab111
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVI. 69 New Quasars at 5.8 < z < 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] Revisiting the Color-Color Selection: Submillimeter and AGN Properties of NUV-r-J Selected Quiescent Galaxies (2021)
  • Author(s): Hwang Yu-Hsuan、Wang Wei-Hao、Chang Yu-Yen、Lim Chen-Fatt、Chen Chian-Chou、Gao Zhen-Kai、Dunlop James S.、Gao Yu、Ho Luis C.、Hwang Ho Seong、Koprowski Maciej、Michalowski Michal J.、Peng Ying-jie、Shim Hyunjin、Simpson James M.、Toba Yoshiki
  • Journal Title: The Astrophysical Journal Volume: 913 Issue: 1 Pages: 6-6
  • DOI: 10.3847/1538-4357/abf11a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A candidate optically quiescent quasar lacking narrow emission lines (2021)
  • Author(s): Greenwell Claire、Gandhi Poshak、Stern Daniel、Boorman Peter、Toba Yoshiki、Lansbury George、Mainieri Vincenzo、Desira Christopher
  • Journal Title: Monthly Notices of the Royal Astronomical Society: Letters Volume: 503 Issue: 1 Pages: L80-L84
  • DOI: 10.1093/mnrasl/slab019
  • Peer Reviewed / 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] Active galactic nuclei catalog from the AKARI NEP-Wide field (2021)
  • Author(s): Poliszczuk Artem、Pollo Agnieszka、Malk Katarzyna、Durkalec Anna、Pearson William J.、Goto Tomotsugu、Jin Kim Seong、Malkan Matthew、Oi Nagisa、Ho Simon C.-C.、Shim Hyunjin、Pearson Chris、Seong Hwang Ho、Toba Yoshiki、Kim Eunbin
  • Journal Title: Astronomy & Astrophysics Volume: 651 Pages: A108-A108
  • DOI: 10.1051/0004-6361/202040219
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A systematic study of silicate absorption features in heavily obscured AGNs observed by Spitzer/IRS (2021)
  • Author(s): Tsuchikawa T.、Kaneda H.、Oyabu S.、Kokusho T.、Kobayashi H.、Yamagishi M.、Toba Y.
  • Journal Title: Astronomy & Astrophysics Volume: 651 Pages: A117-A117
  • DOI: 10.1051/0004-6361/202140483
  • Peer Reviewed / Open Access / Int'l Joint Research
• [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] Identifying AGN Host Galaxies by Machine Learning with HSC+WISE (2021)
  • Author(s): Chang Yu-Yen、Hsieh Bau-Ching、Wang Wei-Hao、Lin Yen-Ting、Lim Chen-Fatt、Toba Yoshiki、Zhong Yuxing、Chang Siou-Yu
  • Journal Title: The Astrophysical Journal Volume: 920 Issue: 2 Pages: 68-68
  • DOI: 10.3847/1538-4357/ac167c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Optically detected galaxy cluster candidates in the AKARI North Ecliptic Pole field based on photometric redshift from the Subaru Hyper Suprime-Cam (2021)
  • Author(s): Huang Ting-Chi、Matsuhara Hideo、Goto Tomotsugu、...、Toba Yoshiki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 506 Issue: 4 Pages: 6063-6080
  • DOI: 10.1093/mnras/stab2128
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Environmental effects on AGN activity via extinction-free mid-infrared census (2021)
  • Author(s): Santos Daryl Joe D、Goto Tomotsugu、Kim Seong Jin、Wang Ting-Wen、Ho Simon C-C、Hashimoto Tetsuya、Huang Ting-Chi、Lu Ting-Yi、On Alvina Y L、Wong Yi-Hang Valerie、Hsiao Tiger Yu-Yang、Pollo Agnieszka、Malkan Matthew A、Miyaji Takamitsu、Toba Yoshiki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 507 Issue: 2 Pages: 3070-3088
  • DOI: 10.1093/mnras/stab2352
  • Peer Reviewed / 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] Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program (2021)
  • Author(s): Tang S.、Silverman J.D.、Ding X.、Li J.、Lee K.-G.、Strauss M.A.、Goulding A.、Schramm M.、Kawinwanichakij L.、Xavier P.J.、Hennawi J.F.、Imanishi M.、Iwasawa K.、Toba Y.、Kayo I.、Oguri M.、Matsuoka Y.、Onoue M.、Jahnke K.、Ichikawa K.、Hartwig T.、Kashikawa N.、Kawaguchi Toshihiro、et al.
  • Journal Title: The Astrophysical Journal Volume: 922 Issue: 1 Pages: 83-83
  • DOI: 10.3847/1538-4357/ac1ff0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The evolution of merger fraction of galaxies at z < 0.6 depending on the star formation mode in the AKARI NEP-Wide Field (2021)
  • Author(s): Kim Eunbin、Hwang Ho Seong、Jeong Woong-Seob、Kim Seong Jin、Burgarella Denis、Goto Tomotsugu、Hashimoto Tetsuya、Jo Young-Soo、Lee Jong Chul、Malkan Matthew、Pearson Chris、Shim Hyunjin、Toba Yoshiki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 507 Issue: 3 Pages: 3113-3124
  • DOI: 10.1093/mnras/stab2090
  • Peer Reviewed / 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] 4 2021ApJS..257...61Y 2021/12 cited: 3 quick access to full text links quick links to lists of references, citations and more quick links to data associated with this article Comprehensive Broadband X-Ray and Multiwavelength Study of Active Galactic Nuclei in 57 Local Luminous and Ultraluminous Infrared Galaxies Observed with NuSTAR and/or Swift/BAT (2021)
  • Author(s): Yamada, S., Ueda, Y. et al.
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 257 Issue: 2 Pages: 61-61
  • DOI: 10.3847/1538-4365/ac17f5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Where’s Swimmy?: Mining unique color features buried in galaxies by deep anomaly detection using Subaru Hyper Suprime-Cam data (2021)
  • Author(s): Tanaka Takumi S、Shimakawa Rhythm、Shimasaku Kazuhiro、Toba Yoshiki、Kashikawa Nobunari、Tanaka Masayuki、Inoue Akio K
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 1 Pages: 1-23
  • DOI: 10.1093/pasj/psab105
  • Peer Reviewed / 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 Letters Volume: －
  • 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: －
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Revisiting the Color-Color Selection: Submillimeter and AGN Properties of NUV-r-J Selected Quiescent Galaxies (2021)
  • Author(s): Hwang Yu-Hsuan, Wang Wei-Hao, Chang Yu-Yen, ..., Toba Yoshiki
  • Journal Title: The Astrophysical Journal Volume: －
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Photometric redshifts in the North Ecliptic Pole Wide field based on a deep optical survey with Hyper Suprime-Cam (2021)
  • Author(s): Ho Simon C-C、Goto Tomotsugu、Oi Nagisa、Kim Seong Jin、Malkan Matthew A、Pollo Agnieszka、Hashimoto Tetsuya、Toba Yoshiki、Kim Helen K、Hwang Ho Seong、Shim Hyunjin、Huang Ting-Chi、Kim Eunbin、Wang Ting-Wen、Santos Daryl Joe D、Matsuhara Hideo
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 502 Issue: 1 Pages: 140-156
  • DOI: 10.1093/mnras/staa3549
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Black Hole and Galaxy Coevolution in Moderately Luminous Active Galactic Nuclei at z ~ 1.4 in SXDF (2021)
  • Author(s): Setoguchi Kenta、Ueda Yoshihiro、Toba Yoshiki、Akiyama Masayuki
  • Journal Title: The Astrophysical Journal Volume: 909 Issue: 2 Pages: 188-193
  • DOI: 10.3847/1538-4357/abdf55
  • Peer Reviewed / Open Access
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XII. Extended [C ii] Structure (Merger or Outflow) in a z = 6.72 Red Quasar (2021)
  • Author(s): Izumi T., Onoue M., Matsuoka Y., M.A. Strauss, S. Fujimoto, H. Umehata, M. Imanishi, T. Kawamuro, T. Nagao, Y. Toba, K. Kohno, N. Kashikawa, K. Inayoshi, T. Kawaguchi, 他20名
  • Journal Title: The Astrophysical Journal Volume: 908 Issue: 2 Pages: 235-235
  • DOI: 10.3847/1538-4357/abd7ef
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru/HSC deep optical imaging of infrared sources in the AKARI North Ecliptic Pole-Wide field (2020)
  • Author(s): Oi Nagisa、Goto Tomotsugu、Matsuhara Hideo、Utsumi Yousuke、Momose Rieko、Toba Yoshoki、Malkan Matthew、Takagi Toshinobu、Huang Ting-Chi、Kim Seong Jin、Ohyama Youichi
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 500 Issue: 4 Pages: 5024-5042
  • DOI: 10.1093/mnras/staa3080
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Identification of AKARI infrared sources by the Deep HSC Optical Survey: construction of a new band-merged catalogue in the North Ecliptic Pole Wide field (2020)
  • Author(s): Kim Seong Jin、Oi Nagisa、Goto Tomotsugu、Ikeda Hiroyuki、Ho Simon C-C、Shim Hyunjin、Toba Yoshiki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 500 Issue: 3 Pages: 4078-4094
  • DOI: 10.1093/mnras/staa3359
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tracing the evolution of dust-obscured activity using sub-millimetre galaxy populations from STUDIES and AS2UDS (2020)
  • Author(s): Dudzeviciute U、Smail Ian、Swinbank A M、Lim C-F、Wang W-H、Simpson J M、Ao Y、Chapman S C、Chen C-C、Clements D、Dannerbauer H、Ho L C、Hwang H S、Koprowski M、Lee C-H、Scott D、Shim H、Shirley R、Toba Y
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 500 Issue: 1 Pages: 942-961
  • DOI: 10.1093/mnras/staa3285
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Extinction-free Census of AGNs in the AKARI/IRC North Ecliptic Pole Field from 23-band infrared photometry from Space Telescopes (2020)
  • Author(s): Wang Ting-Wen、Goto Tomotsugu、Kim Seong Jin、Hashimoto Tetsuya、Burgarella Denis、Toba Yoshiki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 499 Issue: 3 Pages: 4068-4081
  • DOI: 10.1093/mnras/staa2988
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] NuSTAR Non-detection of a Faint Active Galactic Nucleus in an Ultraluminous Infrared Galaxy with Kpc-scale Fast Wind (2020)
  • Author(s): Chen Xiaoyang、Ichikawa Kohei、Noda Hirofumi、Kawamuro Taiki、Kawaguchi Toshihiro、Toba Yoshiki、Akiyama Masayuki
  • Journal Title: The Astrophysical Journal Volume: 905 Issue: 1 Pages: 2-7
  • DOI: 10.3847/2041-8213/abca30
  • 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] NEPSC2, the North Ecliptic Pole SCUBA-2 survey: 850-μm map and catalogue of 850-μm-selected sources over 2 deg2 (2020)
  • Author(s): Shim Hyunjin、Kim Yeonsik、Lee Dongseob、...、Toba Yoshiki、White Glenn
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 498 Issue: 4 Pages: 5065-5079
  • DOI: 10.1093/mnras/staa2621
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-zExploration of Low-luminosity Quasars (SHELLQs). XI. Proximity Zone Analysis for Faint Quasar Spectra atz? 6 (2020)
  • Author(s): Ishimoto Rikako、Kashikawa Nobunari、Onoue Masafusa、Matsuoka Yoshiki、Izumi Takuma、Strauss Michael A.、Fujimoto Seiji、Imanishi Masatoshi、Ito Kei、Iwasawa Kazushi、Kawaguchi Toshihiro、Lee Chien-Hsiu、Liang Yongming、Lu Ting-Yi、Momose Rieko、Toba Yoshiki、Uchiyama Hisakazu
  • Journal Title: The Astrophysical Journal Volume: 903 Issue: 1 Pages: 60-60
  • DOI: 10.3847/1538-4357/abb80b
  • 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] 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] CFHT MegaPrime/MegaCam u-band source catalogue of the AKARI North Ecliptic Pole Wide field (2020)
  • Author(s): Huang Ting-Chi、Matsuhara Hideo、Goto Tomotsugu、Shim Hyunjin、Kim Seong Jin、Malkan Matthew A、Hashimoto Tetsuya、Hwang Ho Seong、Oi Nagisa、Toba Yoshiki、Lee Dongseob、Santos Daryl Joe D、Takagi Toshinobu
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 498 Issue: 1 Pages: 609-620
  • DOI: 10.1093/mnras/staa2459
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tracing the Coevolution Path of Supermassive Black Holes and Spheroids with AKARI-selected Ultraluminous IR Galaxies at Intermediate Redshifts (2020)
  • Author(s): Chen Xiaoyang、Akiyama Masayuki、Ichikawa Kohei、Noda Hirofumi、Toba Yoshiki、Yamamura Issei、Kawaguchi Toshihiro、UF Abdurro’、Kokubo Mitsuru
  • Journal Title: The Astrophysical Journal Volume: 900 Issue: 1 Pages: 51-51
  • DOI: 10.3847/1538-4357/aba599
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A high redshift population of galaxies at the North Ecliptic Pole (2020)
  • Author(s): Barrufet L.、Pearson C.、Serjeant S.、Malek K.、Baronchelli I.、Campos-Varillas M. C.、White G. J.、Valtchanov I.、Matsuhara H.、Conversi L.、Kim S. J.、Goto T.、Oi N.、Malkan M.、Kim H.、Ikeda H.、Takagi T.、Toba Y.、Miyaji T.
  • Journal Title: Astronomy & Astrophysics Volume: 641 Pages: 129-144
  • DOI: 10.1051/0004-6361/202037838
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Properties of the environment around active galactic nucleus / luminous galaxy pairs through the HSC wide survey (2020)
  • Author(s): Shirasaki Yuji、Akiyama Masayuki、Toba Yoshiki、He Wanqiu、Goto Tomotsugu
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 4
  • DOI: 10.1093/pasj/psaa037
  • 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 Program (2020)
  • Author(s): Silverman J.D., Tang S., Lee K.-G., T. Hartwig, A. Goulding, M.A. Strauss, M. Schramm, X. Ding, R. Riffel, S. Fujimoto, C. Hikage, M. Imanishi, K. Iwasawa, K. Jahnke, I. Kayo, N. Kashikawa, T. Kawaguchi, 他16名
  • Journal Title: The Astrophysical Journal Volume: 899 Issue: 2 Pages: 154-154
  • DOI: 10.3847/1538-4357/aba4a3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field (2020)
  • Author(s): Toba Yoshiki、Goto Tomotsugu、Oi Nagisa、Wang Ting-Wen、Kim Seong Jin、et al.
  • Journal Title: The Astrophysical Journal Volume: 899 Issue: 1 Pages: 35-47
  • DOI: 10.3847/1538-4357/ab9cb7
  • Peer Reviewed / Open Access / 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] Nature of Compton-thick Active Galactic Nuclei in “Nonmerging” Luminous Infrared Galaxies UGC 2608 and NGC 5135 Revealed with Broadband X-Ray Spectroscopy (2020)
  • Author(s): Yamada Satoshi、Ueda Yoshihiro、Tanimoto Atsushi、Oda Saeko、Imanishi Masatoshi、Toba Yoshiki、Ricci Claudio
  • Journal Title: The Astrophysical Journal Volume: 897 Issue: 1 Pages: 107-117
  • DOI: 10.3847/1538-4357/ab94b1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). IV. Spatial Clustering and Halo Masses of Submillimeter Galaxies (2020)
  • Author(s): Lim Chen-Fatt、Chen Chian-Chou、Smail Ian、Wang Wei-Hao、Tee Wei-Leong、Lin Yen-Ting、Scott Douglas、Toba Yoshiki、et al.
  • Journal Title: The Astrophysical Journal Volume: 895 Issue: 2 Pages: 104-121
  • DOI: 10.3847/1538-4357/ab8eaf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A machine learning software to estimate morphological parameters of distant galaxies (2020)
  • Author(s): Umayahara Takuya、Shibuya Takatoshi、Miura Noriaki、Chang Yu-Yen、Fujimoto Seiji、Harikane Yuichi、Higuchi Ryo、Inoue Shigeki、Kojima Takashi、Tadaki Ken-ichi、Toba Yoshiki
  • Journal Title: Proceedings of the SPIE Volume: 11452 Pages: 86-86
  • DOI: 10.1117/12.2561264
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] S2COSMOS: Evolution of Gas Mass with Redshift Using Dust Emission (2020)
  • Author(s): Millard Jenifer S、Eales Stephen A、Smith M W L、Gomez H L、Ma?ek K、Simpson J M、Peng Y、Sawicki M、Beeston R A、Bunker Andrew、Ao Y、Babul A、Ho L C、Hwang Ho Seong、Micha?owski M J、Scoville N、Shim H、Toba Y
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Issue: 1 Pages: 293-315
  • DOI: 10.1093/mnras/staa609
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] SCUBA-2 Ultra Deep Imaging EAO Survey (Studies). III. Multiwavelength Properties, Luminosity Functions, and Preliminary Source Catalog of 450 μm Selected Galaxies (2020)
  • Author(s): Lim Chen-Fatt、Wang Wei-Hao、Smail Ian、Scott Douglas、Chen Chian-Chou、Chang Yu-Yen、Simpson James M.、Toba Yoshiki、et al.
  • Journal Title: The Astrophysical Journal Volume: 889 Issue: 2 Pages: 80-112
  • DOI: 10.3847/1538-4357/ab607f
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] SOFIA/HAWC+ View of an Extremely Luminous Infrared Galaxy: WISE 1013+6112 (2020)
  • Author(s): Toba Yoshiki、Wang Wei-Hao、Nagao Tohru、Ueda Yoshihiro、Ueda Junko、Lim Chen-Fatt、Chang Yu-Yen、Saito Toshiki、Kawabe Ryohei
  • Journal Title: The Astrophysical Journal Volume: 889 Issue: 2 Pages: 76-82
  • DOI: 10.3847/1538-4357/ab616d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] NuSTAR Discovery of a Compton-thick, Dust-obscured Galaxy: WISE J0825+3002 (2019)
  • Author(s): Toba Yoshiki、Yamada Satoshi、Ueda Yoshihiro、Ricci Claudio、Terashima Yuichi、Nagao Tohru、Wang Wei-Hao、Tanimoto Atsushi、Kawamuro Taiki
  • Journal Title: The Astrophysical Journal Volume: 888 Issue: 1 Pages: 8-17
  • DOI: 10.3847/1538-4357/ab5718
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Second Data Release of the Hyper Suprime-Cam Subaru Strategic Program (2019)
  • Author(s): Aihara et al. (including C. Hikage)
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 6 Pages: 114-114
  • DOI: 10.1093/pasj/psz103
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). VIII. A less biased view of the early co-evolution of black holes and host galaxies (2019)
  • Author(s): Izumi Takuma、Onoue Masafusa、Matsuoka Yoshiki、Nagao Tohru、Strauss Michael A、Imanishi Masatoshi、Kashikawa Nobunari、Fujimoto Seiji、Kohno Kotaro、Toba Yoshiki、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 6 Pages: 111-131
  • DOI: 10.1093/pasj/psz096
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] HSC-XD 52: An X-Ray Detected AGN in a Low-mass Galaxy at z ? 0.56 (2019)
  • Author(s): Halevi Goni、Goulding Andy、Greene Jenny、Coupon Jean、Golob Anneya、Gwyn Stephen、Johnson Sean D.、Moutard Thibaud、Sawicki Marcin、Suh Hyewon、Toba Yoshiki
  • Journal Title: The Astrophysical Journal Letters Volume: 885 Issue: 1 Pages: 3-8
  • DOI: 10.3847/2041-8213/ab4b4f
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Torus Constraints in ANEPD-CXO245: A Compton-thick AGN with Double-peaked Narrow Lines (2019)
  • Author(s): Miyaji Takamitsu、Herrera-Endoqui Martin、Krumpe Mirko、Hanzawa Masaki、Shogaki Ayano、Matsuura Shuji、Tanimoto Atsushi、Ueda Yoshihiro、Ishigaki Tsuyoshi、Barrufet Laia、Brunner Hermann、Matsuhara Hideo、Goto Tomotsugu、Takagi Toshinobu、Pearson Chris、Burgarella Denis、Oi Nagisa、Malkan Matthew、Toba Yoshiki、et al.
  • Journal Title: The Astrophysical Journal Letters Volume: 884 Issue: 1 Pages: 10-15
  • DOI: 10.3847/2041-8213/ab46bc
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). X. Discovery of 35 Quasars and Luminous Galaxies at 5.7 < z < 7.0 (2019)
  • Author(s): Matsuoka Yoshiki、Iwasawa Kazushi、Onoue Masafusa、Kashikawa Nobunari、Strauss Michael A.、Lee Chien-Hsiu、Imanishi Masatoshi、Nagao Tohru、Akiyama Masayuki、Asami Naoko、Bosch James、Furusawa Hisanori、Goto Tomotsugu、Gunn James E.、Harikane Yuichi、Ikeda Hiroyuki、Izumi Takuma、Kawaguchi Toshihiro、et al.
  • Journal Title: The Astrophysical Journal Volume: 883 Issue: 2 Pages: 183-183
  • DOI: 10.3847/1538-4357/ab3c60
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] NuSTAR Discovery of Dead Quasar Engine in Arp 187 (2019)
  • Author(s): Ichikawa Kohei、Kawamuro Taiki、Shidatsu Megumi、Ricci Claudio、Bae Hyun-Jin、Matsuoka Kenta、Shin Jaejin、Toba Yoshiki、Ueda Junko、Ueda Yoshihiro
  • Journal Title: The Astrophysical Journal Letters Volume: 883 Issue: 1 Pages: 13-17
  • DOI: 10.3847/2041-8213/ab3ebf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). VI. Black Hole Mass Measurements of Six Quasars at 6.1 ? z ? 6.7 (2019)
  • Author(s): Onoue Masafusa、Kashikawa Nobunari、Matsuoka Yoshiki、Kato Nanako、Izumi Takuma、Nagao Tohru、Strauss Michael A.、Harikane Yuichi、Imanishi Masatoshi、Ito Kei、Iwasawa Kazushi、Kawaguchi Toshihiro、Lee Chien-Hsiu、Noboriguchi Akatoki、Suh Hyewon、Tanaka Masayuki、Toba Yoshiki
  • Journal Title: The Astrophysical Journal Volume: 880 Issue: 2 Pages: 77-91
  • DOI: 10.3847/1538-4357/ab29e9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties Derived from the SED Fitting with Optical, Infrared, and Radio Data (2019)
  • Author(s): Toba Yoshiki、Yamashita Takuji、Nagao Tohru、Wang Wei-Hao、Ueda Yoshihiro、Ichikawa Kohei、Kawaguchi Toshihiro、Akiyama Masayuki、Hsieh Bau-Ching、Kajisawa Masaru、Lee Chien-Hsiu、Matsuoka Yoshiki、Noboriguchi Akatoki、Onoue Masafusa、Schramm Malte、Tanaka Masayuki、Komiyama Yutaka
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 243 Issue: 1 Pages: 15-37
  • DOI: 10.3847/1538-4365/ab238d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Near- to mid-infrared spectroscopy of the heavily obscured AGN LEDA 1712304 with AKARI/IRC (2019)
  • Author(s): Tsuchikawa T.、Kaneda H.、Oyabu S.、Kokusho T.、Morihana K.、Kobayashi H.、Yamagishi M.、Toba Y.
  • Journal Title: Astronomy & Astrophysics Volume: 626 Pages: 130-137
  • DOI: 10.1051/0004-6361/201935483
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Optical Properties of Infrared-bright Dust-obscured Galaxies Viewed with Subaru Hyper Suprime-Cam (2019)
  • Author(s): Noboriguchi Akatoki、Nagao Tohru、Toba Yoshiki、Niida Mana、Kajisawa Masaru、Onoue Masafusa、Matsuoka Yoshiki、Yamashita Takuji、Chang Yu-Yen、Kawaguchi Toshihiro、Komiyama Yutaka、Nobuhara Kodai、Terashima Yuichi、Ueda Yoshihiro
  • Journal Title: The Astrophysical Journal Volume: 876 Issue: 2 Pages: 132-149
  • DOI: 10.3847/1538-4357/ab1754
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Luminosity Ratio between [O iv] 25.89 μm Line and Nuclear Continuum 12 μm as a Diagnostic for “Buried” AGNs (2019)
  • Author(s): Yamada Satoshi、Ueda Yoshihiro、Tanimoto Atsushi、Kawamuro Taiki、Imanishi Masatoshi、Toba Yoshiki
  • Journal Title: The Astrophysical Journal Volume: 876 Issue: 2 Pages: 96-101
  • DOI: 10.3847/1538-4357/ab14f0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Infrared luminosity functions based on 18 mid-infrared bands: revealing cosmic star formation history with AKARI and Hyper Suprime-Cam* (2019)
  • Author(s): Goto Tomotsugu、Oi Nagisa、Utsumi Yousuke、Momose Rieko、Matsuhara Hideo、Hashimoto Tetsuya、Toba Yoshiki、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 2 Pages: 30-39
  • DOI: 10.1093/pasj/psz009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discovery of Extreme Ionized-gas Outflow in an AKARI-selected Ultra-luminous Infrared Galaxy at z=0.5 (2019)
  • Author(s): X. Chen, M. Akiyama, H. Noda, A.’Uf, Y. Toba, I. Yamamura, T. Kawaguchi, M. Kokubo and K. Ichikawa
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 2 Pages: 29-29
  • DOI: 10.1093/pasj/psz002
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] eROSITA view of WISE-selected AGN at z < 4 (2022)
  • Author(s): Y.Toba, T.Liu, T.Urrutia, M.Salvato, J.Li, Y.Ueda, M.Brusa, N.Yutani, K.Wada, and HSC-eROSITA AGN collaboration
  • Organizer: GALAXY EVOLUTION WORKSHOP 2021
  • Int'l Joint Research
• [Presentation] An overview of AGN WG (2022)
  • Author(s): Y.Toba
  • Organizer: The HSC collaboration meeting 2022
  • Int'l Joint Research / Invited
• [Presentation] eROSITA view of an extremely infrared-luminous AGN at z = 1.87 (2022)
  • Author(s): Yoshiki Toba, Marcella Brusa, Teng Liu, Johannes Buchner, Yuichi Terashima, Tanya Urrutia, Mara Salvato, and eROSITA-HSC AGN collaboration
  • Organizer: 日本天文学会 春季年会
• [Presentation] すばる望遠鏡を用いた銀河団中のAGNfraction分布の調査 (2022)
  • Author(s): 橋口葵、鳥羽儀樹、太田直美、大栗真宗、上田佳宏、他HSC project 364 メンバー
  • Organizer: 日本天文学会 春季年会
• [Presentation] eROSITA view of WISE mid-IR galaxies/AGN (2021)
  • Author(s): Y.Toba, M.Brusa, T.Liu, T.Urrutia, J.Buchner, J.Li, A.Merloni, T.Nagao, A.Nishizawa, M.Salvato, Y.Terashima,.Ueda, K.Wada, N.Yutani, and HSC-eROSITA AGN collaboration
  • Organizer: 17th German eROSITA Virtual Consortium meeting
  • Int'l Joint Research / Invited
• [Presentation] HSC AGN overview (2021)
  • Author(s): Y.Toba
  • Organizer: Joint XXL-HSC meeting
  • Int'l Joint Research / Invited
• [Presentation] SOFIA/HAWC+ view of an extremely luminous infrared galaxy at z = 3.7 (2021)
  • Author(s): Y.Toba
  • Organizer: The Future of Airborne Infrared/Submm Astronomy: Prospects and Opportunities
  • Int'l Joint Research
• [Presentation] eROSITA view of WISE-selected AGN (2021)
  • Author(s): Y.Toba
  • Organizer: East-Asia AGN Workshop 2021
  • Int'l Joint Research
• [Presentation] せいめい望遠鏡 KOOLS-IFU 可視面分光観測で探る NGC 7674 の AGN活動 (2021)
  • Author(s): 鳥羽儀樹、守屋碧、太田直美、山田智史、城知磨、 松林和也、橋口葵、柴田実桜 、美里らな、上田佳宏
  • Organizer: 日本天文学会 秋季年会
• [Presentation] How does the polar dust affect the correlation between dust covering factor and Eddington ratio in type 1 quasars selected from the SDSS DR16? (2021)
  • Author(s): Yoshiki Toba, Yoshihiro Ueda, Poshak Gandhi, Claudio Ricci, Denis Burgarella, Veronique Buat, Tohru Nagao, Shinki Oyabu, Hideo Matsuhara, Bau-Ching Hsieh
  • Organizer: 日本天文学会 秋季年会
• [Presentation] 中間赤外線サーベイによる埋もれたAGNの探査：現状のまとめとFORCEへの期待 (2021)
  • Author(s): 鳥羽儀樹
  • Organizer: 第５回FORCE研究会 (埋もれたAGNの宇宙論的進化)
  • Invited
• [Presentation] G-REXで探る dust-obscured galaxies/AGNs (2021)
  • Author(s): 鳥羽儀樹
  • Organizer: G-REX (+中間赤外高分散分光) サイエンス検討会
  • Invited
• [Presentation] Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field (2021)
  • Author(s): Yoshiki Toba, Tomotsugu Goto, Nagisa Oi, Ting-Wen Wang Seong Jin Kim, Simon C.-C. Ho, and the AKARI-NEP team
  • Organizer: 日本天文学会 春季年会
• [Presentation] Initial results from Subaru/HSC-eROSITA AGN collaboration (2021)
  • Author(s): Yoshiki Toba, HSC-eROSITA AGN collaboration
  • Organizer: Subaru Users Meeting FY2020
  • Int'l Joint Research
• [Presentation] eROSITA view of an extremely luminous infrared galaxy at z = 1.87 (2021)
  • Author(s): Yoshiki Toba, Marcella Brusa, Teng Liu, Johannes Buchner, Yuichi Terashima, Tanya Urrutia, Mara Salvato, and eROSITA-HSC AGN collaboration
  • Organizer: Galaxy Evolution Workshop 2020
  • Int'l Joint Research
• [Presentation] How does the polar dust affect the dust covering factor of AGNs? (2020)
  • Author(s): Yoshiki Toba, Yoshihiro Ueda, Poshak Gandhi, Claudio Ricci, Denis Burgarella, Veronique Buat, Tohru Nagao, Shinki Oyabu, Hideo Matsuhara, Bau-Ching Hsieh
  • Organizer: Probing the Extragalactic Universe with High Energy and Very High Energy Sources, NECO online workshop
  • Int'l Joint Research
• [Presentation] How does the polar dust affect the dust covering factor of AGNs? ~Application of X-CIGALE to SDSS quasars~ (2020)
  • Author(s): Yoshiki Toba, Yoshihiro Ueda, Poshak Gandhi, Claudio Ricci, Denis Burgarella, Veronique Buat, Tohru Nagao, Shinki Oyabu, Hideo Matsuhara, Bau-Ching Hsieh
  • Organizer: NEP Conference 2020
  • Int'l Joint Research
• [Presentation] Dust properties of optically dark IR galaxies without counterparts of Subaru HSC in the AKARI NEP field (2020)
  • Author(s): Yoshiki Toba, Tomotsugu Goto, Nagisa Oi, Ting-Wen Wang Seong Jin Kim, Simon C.-C. Ho, and the AKARI-NEP team
  • Organizer: DUST2020 in Marseille
  • Int'l Joint Research
• [Presentation] Search for optically `invisible’ galaxies in the AKARI North Ecliptic Pole Field (2020)
  • Author(s): Yoshiki Toba
  • Organizer: ISAS Astrophysics Colloquia
  • Int'l Joint Research / Invited
• [Presentation] SOFIA View of an Extremely Luminous Infrared Galaxy: WISE 1013+6112 (2020)
  • Author(s): Yoshiki Toba, Wei-Hao Wang, Tohru Nagao, Yoshihiro Ueda, Junko Ueda, Chen-Fatt Lim, Yu-Yen Chang, Toshiki Saito, Ryohei Kawabe
  • Organizer: 日本天文学会 秋季年会
• [Presentation] Report on AGN joint HSC-eROSITA science programs (2020)
  • Author(s): Yoshiki Toba
  • Organizer: German eROSITA Virtual Consortium meeting
  • Int'l Joint Research / Invited
• [Presentation] HSC AGN WG update (2020)
  • Author(s): Yoshiki Toba
  • Organizer: Joint XXL-HSC meeting
  • Int'l Joint Research / Invited
• [Presentation] eROSITA view of dust-obscured AGNs (2020)
  • Author(s): Yoshiki Toba
  • Organizer: The HSC-AGN face-to-face meeting
  • Int'l Joint Research
• [Presentation] RSAの紹介と多波長データの重要性 (2020)
  • Author(s): 鳥羽儀樹
  • Organizer: 第二回データアーカイブワークショップ
  • Invited
• [Presentation] NuSTAR Discovery of a Compton-thick Dust-obscured Galaxy WISEJ0825+3002 (2020)
  • Author(s): Yoshiki Toba, Satoshi Yamada, Yoshihiro Ueda, Claudio Ricci, Yuichi Terashima, Tohru Nagao, Wei-Hao Wang, Atsushi Tanimoto, Taiki Kawamuro
  • Organizer: 日本天文学会 春季年会
• [Presentation] Far-infrared View of an Extremely Luminous Infrared Galaxy at z = 3.7 (2019)
  • Author(s): Yoshiki Toba, Wei-Hao Wang, Tohru Nagao, Yoshihiro Ueda, Junko Ueda, Chen-Fatt Lim, Yu-Yen Chang, Toshiki Saito, Ryohei Kawabe
  • Organizer: Galaxy Formation and Evolution Across Cosmic Time
  • Int'l Joint Research
• [Presentation] Multi-wavelength view of hyper/extremely-luminous infrared galaxies (2019)
  • Author(s): Yoshiki Toba
  • Organizer: Kindai Cosmology Seminar
  • Invited
• [Presentation] Multi-wavelength view of dust-obscured galaxies (2019)
  • Author(s): Yoshiki Toba
  • Organizer: Subaru Telescope 20th Anniversary
  • Int'l Joint Research
• [Presentation] Possible collaboration between AGN and galaxy cluster sciences with HSC (2019)
  • Author(s): Yoshiki Toba
  • Organizer: The 3rd HSC-X Cluster Workshop
  • Int'l Joint Research
• [Presentation] AKARI sources without HSC counterparts (2019)
  • Author(s): Yoshiki Toba
  • Organizer: NEP MEETING 2019 ~Future Science with Multi-Wavelength data~
  • Int'l Joint Research / Invited
• [Presentation] Physical properties of luminous radio galaxies at 0 < z < 1.7 selected with Subaru Hyper Suprime-Cam and VLA FIRST survey (2019)
  • Author(s): Yoshiki Toba
  • Organizer: Supermassive Black Holes: Environment and Evolution
  • Int'l Joint Research
• [Presentation] Dusty radio galaxies with high SFR, AGN luminosity, and Eddington ratio discovered by Subaru/HSC and VLA/FIRST (2019)
  • Author(s): Yoshiki Toba
  • Organizer: The 6th Galaxy Evolution Workshop
  • Int'l Joint Research
• [Presentation] Dust-obscured AGNs viewed with eROSITA and HSC (2019)
  • Author(s): Yoshiki Toba
  • Organizer: First HSC-eROSITA-DE joint collaboration meeting
  • Int'l Joint Research / Invited
• [Presentation] Dust properties of AGNs in the early Universe (2019)
  • Author(s): 鳥羽儀樹
  • Organizer: SPICAサイエンス検討会・中間報告会
• [Presentation] KOOLS IFUを用いた近傍超/高光度赤外線銀河の観測 (2019)
  • Author(s): 鳥羽儀樹
  • Organizer: 面分光研究会2019
  • Invited
• [Presentation] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties derived from the SED Fitting with Optical, Infrared, and Radio Data (2019)
  • Author(s): Yoshiki Toba, Takuji Yamashita, Tohru Nagao, Wei-Hao Wang, Yoshihiro Ueda, Kohei Ichikawa, WERGS project
  • Organizer: 日本天文学会 秋季年会
• [Presentation] GOALSで発見された近傍超/高光度赤外線銀河のKOOLS-IFU面分光観測 (2019)
  • Author(s): 鳥羽儀樹
  • Organizer: 2019年度せいめいユーザーズミーティング
  • Invited
• [Presentation] すばる望遠鏡 Hyper Suprime-Cam と 電波望遠鏡 VLA FIRST で発見された電波銀河の性質について (2019)
  • Author(s): 鳥羽儀樹
  • Organizer: 第117回 宇宙進化研究センター 談話会
  • Invited
• [Funded Workshop] The HSC-AGN face-to-face meeting (2020)