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People > Postdoc > Curriculum Vita
Toba, Yoshiki
Postdoc Fellow
photo of Toba, Yoshiki
Office: ASMAB 1306
TEL: +886-2-2366-5428
FAX: +886-2-2367-7849
Email: toba_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Postdoc, ASIAA (2016~present)
  • Postdoc, Research Center for Space and Cosmic Evolution (RCSCE), Ehime University (2014~2016)
  • Ph.D in Astronomy, The Graduate University for Advanced Studies (SOKENDAI) (2009~2014)

Research Interests

Active Galactic Nuclei (AGNs), Dust torus of AGNs, Co-evolution of galaxies and supermassive black holes, Dust Obscured Galaxies (DOGs)

Recent Journal Papers

  1. Kota Kawasaki*, Tohru Nagao, (Yoshiki Toba), Koki Terao, Kenta Matsuoka, "Active Galactic Nuclei with a Low-Metallicity Narrow-Line Region" , ASTROPHYSICAL JOURNAL, 2017, accepted [SCI]
  2. Kazuyuki Ogura*, Tohru Nagao, Masatoshi Imanishi, Nobunari Kashikawa, Yoshiaki Taniguchi, Masaru Kajisawa, Masakazu Kobayashi, (Yoshiki Toba), Kodai Nobuhara, "Follow-up narrow-band observations for Ly$\alpha$ emitters around a concentrated region of strong Ly$\alpha$ absorbers at z = 2.3" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: ,, 2017, accepted [SCI]
  3. Yoshiki Matsuoka*, Masafusa Onoue, Nobunari Kashikawa, Kazushi Iwasawa, Michael A. Strauss, Tohru Nagao, Masatoshi Imanishi, Chien-Hsiu Lee, Masayuki Akiyama, Naoko Asami, James Bosch, Sebastien Foucaud, Hisanori Furusawa, Tomotsugu Goto, James E. Gunn, Yuichi Harikane, Hiroyuki Ikeda, Takuma Izumi, Toshihiro Kawaguchi, Satoshi Kikuta, Kotaro Kohno, Yutaka Komiyama, Robert H. Lupton, Takeo Minezaki, Satoshi Miyazaki, Tomoki Morokuma, Hitoshi Murayama, Mana Niida, Atsushi J. Nishizawa, Masamune Oguri, Yoshiaki Ono, Masami Ouchi, Paul A. Price, Hiroaki Sameshima, Andreas Schulze, Hikari Shirakata, John D. Silverman, Naoshi Sugiyama, Philip J. Tait, Masahiro Takada, Tadafumi Takata, Masayuki Tanaka, Ji-Jia Tang, (Yoshiki Toba), Yousuke Utsumi, Shiang-Yu Wang, "Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 Quasars and Luminous Galaxies at 5.7 < z < 6.8" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2017, accepted [SCI]
  4. (Yoshiki Toba)*, Tohru Nagao, Wei-Hao Wang, Hideo Matsuhara, Masayuki Akiyama , Tomotsugu Goto, Yusei Koyama, Youich Ohyama, Issei Yamamura, "Far-infrared Properties of Infrared-bright Dust-obscured Galaxies Selected with IRAS and AKARI Far-infrared All-sky Survey" , ASTROPHYSICAL JOURNAL: 40 (1), 21-30, 2017-05 [SCI] (Fulltext)
  5. (Yoshiki Toba)*, Tohru Nagao, Masaru Kajisawa, Taira Oogi, Masayuki Akiyama, Hiroyuki Ikeda, Jean Coupon, Michael A. Strauss, Wei-Hao Wang, Masayuki Tanaka, Mana Niida, Masatoshi Imanishi, Chien-Hsiu Lee, Hideo Matsuhara, Yoshiki Matsuoka, Masafusa Onoue, Yuichi Terashima, Yoshihiro Ueda, Yuichi Harikane, Yutaka Komiyama, Satoshi Miyazaki, Akatoki Noboriguchi, Tomonori Usuda, "Clustering of Infrared-bright Dust-obscured Galaxies Revealed by the Hyper Suprime-Cam and WISE" , ASTROPHYSICAL JOURNAL: 835 (1), 36-47, 2017-01 [SCI] (Fulltext)
  6. Kohei Ichikawa*, Claudio Ricci, Yoshihiro Ueda, Kenta Matsuoka, (Yoshiki Toba), Taiki Kawamuro, Benny Trakhtenbrot, Michael J. Koss, "The Complete Infrared View of Active Galactic Nuclei from the 70-month Swift/BAT Catalog" , ASTROPHYSICAL JOURNAL: 835 (1), 74-92, 2017-01 [SCI] (Fulltext)
  7. Koki Terao*, Tohru Nagao, Tetsuya Hashimoto, Kenshi Yanagisawa, Kenta Matsuoka, (Yoshiki Toba), Hiroyuki Ikeda, Yoshiaki Taniguchi, "Near-infrared spectroscopy of nearby Seyfert galaxies: Is there evidence for the shock excitation in narrow-line regions?" , ASTROPHYSICAL JOURNAL: 833 (2), 190-201, 2016-12 [SCI] (Fulltext)
  8. Mana Niida*, Tohru Nagao, Hiroyuki Ikeda, Kenta Matsuoka, Masakazu A. R. Kobayashi, (Yoshiki Toba), Yoshiaki Taniguchi, "Revisiting the Completeness and the Luminosity Function in High-Redshift Low-Luminosity Quasar Surveys" , ASTROPHYSICAL JOURNAL: For Volume 832, Issue 2, article id. 208, 12 pp., 2016-12 [SCI] (Fulltext)
  9. Naoki Isobe*, Taiki Kawamuro, Shinki Oyabu, Takao Nakagawa, Shunsuke Baba, Kenichi Yano, Yoshihiro Ueda, (Yoshiki Toba), "X-ray and infrared diagnostics of nearby active galactic nuclei with MAXI and AKARI" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: For Volume 68, Issue 6, id.98 15 pp., 2016-12 [SCI] (Fulltext)
  10. Yoshiki Matsuoka*, Masafusa Onoue, Nobunari Kashikawa, Kazushi Iwasawa, Michael A. Strauss, Tohru Nagao, Masatoshi Imanishi, Mana Niida, (Yoshiki Toba), Masayuki Akiyama, Naoko Asami, James Bosch, Sébastien Foucaud, Hisanori Furusawa, Tomotsugu Goto, James E. Gunn, Yuichi Harikane, Hiroyuki Ikeda, Toshihiro Kawaguchi, Satoshi Kikuta, Yutaka Komiyama, Robert H. Lupton, Takeo Minezaki, Satoshi Miyazaki, Tomoki Morokuma, Hitoshi Murayama, Atsushi J. Nishizawa, Yoshiaki Ono, Masami Ouchi, Paul A. Price, Hiroaki Sameshima, John D. Silverman, Naoshi Sugiyama, Philip J. Tait, Masahiro Takada, Tadafumi Takata, Masayuki Tanaka, Ji-Jia Tang, Yousuke Utsumi, "Subaru high-z exploration of low-luminosity quasars (SHELLQs). I. Discovery of 15 quasars and bright galaxies at 5.7 < z < 6.9" , ASTROPHYSICAL JOURNAL: For Volume 828, Issue 1, article id. 26, 14 pp, 2016-09 [SCI] (Fulltext)
  11. (Yoshiki Toba)*, Tohru Nagao, "Search for Hyper Infrared-Luminous Dust Obscured Galaxies selected with WISE and SDSS" , ASTROPHYSICAL JOURNAL: For Volume 820, Issue 1, article id. 46, 10 pp., 2016-03 [SCI] (Fulltext)
  12. Yuichi Terashima*, Yoshitaka Hirata, Hisamitsu Awaki, Shinki Oyabu, Poshak Gandhi, (Yoshiki Toba), Hideo Matsuhara, "A New Sample of Obscured AGNs Selected from the XMM-Newton and AKARI Surveys" , ASTROPHYSICAL JOURNAL: , Volume 814, Issue 1, article id. 11, 33 pp., 2015-11 [SCI] (Fulltext)
  13. (Yoshiki Toba)*, Tohru Nagao, Michael A. Strauss, Kentaro Aoki, Tomotsugu Goto, Masatoshi Imanishi, Toshihiro Kawaguchi, Yuichi Terashima, Yoshihiro Ueda, James Bosch, Kevin Bundy, Yoshiyuki Doi, Hanae Inami, Yutaka Komiyama, Robert H. Lupton, Hideo Matsuhara, Yoshiki Matsuoka, Satoshi Miyazaki, Tomoki Morokuma, Fumiaki Nakata, Nagisa Oi, Masafusa Onoue, Shinki Oyabu, Paul Price, Philip J. Tait, Tadafumi Takata, Manobu M. Tanaka, Tsuyoshi Terai, Edwin L. Turner, Tomohisa Uchida, Tomonori Usuda, Yousuke Utsumi, Shiang-Yu Wang, Yoshihiko Yamada, "Hyper-luminous Dust Obscured Galaxies discovered by the Hyper Suprime-Cam on Subaru and WISE" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: For Volume 67, Issue 5, id.8615 pp., 2015-10 [SCI] (Fulltext)
  14. Tomotsugu Goto*, Nagisa Oi, Youichi Ohyama, Matthew Malkan, Hideo Matsuhara, Takehiko Wada, Marios Karouzos, Myungshin Im, Takao Nakagawa, Veronique Buat, Denis Burgarella, Chris Sedgwick, (Yoshiki Toba), Woong-Seob Jeong, Lucia Marchetti, Katarzyna Małek, Ekaterina Koptelova, Dani Chao, Yi-Han Wu, Chris Pearson, Toshinobu Takagi, Hyung Mok Lee, Stephen Serjeant, Tsutomu T. Takeuchi, Seong Jin Kim, "Evolution of mid-infrared galaxy luminosity functions from the entire AKARI NEP-Deep field with new CFHT photometry" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: For Volume 452, Issue 2, p.1684-1693, 2015-09 [SCI] (Fulltext)
  15. (Yoshiki Toba)*, Shinki Oyabu, Hideo Matsuhara, Matthew A. Malkan, Poshak Gandhi, Takao Nakagawa, Naoki Isobe, Mai Shirahata, Nagisa Oi, Youichi Ohyama, Satoshi Takita, Chisato Yamauchi, Kenichi Yano, "Luminosity and Redshift Dependence of the Covering Factor of AGNs viewed with WISE and SDSS" , ASTROPHYSICAL JOURNAL: For Volume 788, Issue 1, article id. 45, 36 pp, 2014-06 [SCI] (Fulltext)
  16. (Yoshiki Toba)*, Shinki Oyabu, Hideo Matsuhara, Matthew A. Malkan, Daisuke Ishihara, Takehiko Wada, Youichi Ohyama, Satoshi Takita, Chisato Yamauchi, "The 9 and 18 Micrometer Luminosity Functions of Various Types of Galaxies with AKARI: Implication for the Dust Torus Structure of AGN" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: For Vol.65, No.5, article id.113 20 pp., 2013-10 [SCI] (Fulltext)
  17. (Yoshiki Toba)*, Shinki Oyabu, Hideo Matsuhara, Daisuke Ishihara, Matt Malkan, Takehiko Wada, Youichi Ohyama, Hirokazu Kataza, Satoshi Takita, "The 18 $\mu$m Luminosity Function of Galaxies with AKARI" , Publications of the Korean Astronomical Society: For Volume 27, issue 4, pp. 335-338, 2012-11 (Fulltext)
  18. Sinki Oyabu*, Daisuke Ishihara, Matt Malkan, Hideo Matsuhara, Takehiko Wada, Takao Nakagawa, Youich Ohyama, (Yoshiki Toba), Takashi Onaka, Satoshi Takita, Hirokazu Kataza, Issei Yamamura, Mai Shirahata, "AKARI detections of hot dust in luminous infrared galaxies. Search for dusty active galactic nuclei" , ASTRONOMY & ASTROPHYSICS: For Volume 529, id.A122, 8 pp., 2011-05 [SCI] (Fulltext)
  19. Kentaro Aoki*, Shinki Oyabu, Jay P. Dunn, Nahum Arav, Doug Edmonds, Kirk T. Korista, Hideo Matsuhara, (Yoshiki Toba), "Outflow in Overlooked Luminous Quasar: Subaru Observations of AKARI J1757+5907" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: For Vol.63, No.SP2, pp.457-467, 2011-03 [SCI] (Fulltext)
TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
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