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Rapid evolution and transformation into quiescence? ALMA view on z > 6 low-luminosity quasars

  • Takuma Izumi
  • , Masafusa Onoue
  • , Yoshiki Matsuoka
  • , Tohru Nagao
  • , Michael A. Strauss
  • , Masatoshi Imanishi
  • , Nobunari Kashikawa
  • , Seiji Fujimoto
  • , Kotaro Kohno
  • , Yoshiki Toba
  • , Hideki Umehata
  • , Tomotsugu Goto
  • , Yoshihiro Ueda
  • , Hikari Shirakata
  • , John D. Silverman
  • , Jenny E. Greene
  • , Yuichi Harikane
  • , Yasuhiro Hashimoto
  • , Soh Ikarashi
  • , Daisuke Iono
  • Kazushi Iwasawa, Chien Hsiu Lee, Takeo Minezaki, Kouichiro Nakanishi, Yoichi Tamura, Ji Jia Tang, Akio Taniguchi

研究成果: 書貢獻/報告類型會議論文篇章

摘要

We present ALMA [CII] line and far-infrared (FIR) continuum observations of seven z > 6 low-luminosity quasars (M1450 > −25 mag) discovered by our on-going Subaru Hyper Suprime-Cam survey. The [CII] line was detected in all targets with luminosities of ∼ (2 − 10) × 108 L, about one order of magnitude smaller than optically luminous quasars. Also found was a wide scatter of FIR continuum luminosity, ranging from LFIR < 1011 L to ∼ 2 × 1012 L. With the [CII]-based dynamical mass, we suggest that a significant fraction of low-luminosity quasars are located on or even below the local Magorrian relation, particularly at the massive end of the galaxy mass distribution. This is a clear contrast to the previous finding that luminous quasars tend to have overmassive black holes relative to the relation. Our result is expected to show a less-biased nature of the early co-evolution of black holes and their host galaxies.

原文英語
主出版物標題Proceedings of the International Astronomical Union
編輯Elisabete da Cunha, Elisabete da Cunha, Jacqueline Hodge, Jose Afonso, Laura Pentericci, David Sobral
發行者Cambridge University Press
頁面139-143
頁數5
版本352
ISBN(電子)9781108492133
DOIs
出版狀態已發佈 - 2020
事件352nd Symposium of the International Astronomical Union on Uncovering Early Galaxy Evolution in the ALMA and JWST Era - Viana do Castelo, 葡萄牙
持續時間: 2019 6月 32019 6月 7

出版系列

名字Proceedings of the International Astronomical Union
號碼352
15
ISSN(列印)1743-9213
ISSN(電子)1743-9221

會議

會議352nd Symposium of the International Astronomical Union on Uncovering Early Galaxy Evolution in the ALMA and JWST Era
國家/地區葡萄牙
城市Viana do Castelo
期間2019/06/032019/06/07

ASJC Scopus subject areas

  • 天文和天體物理學
  • 空間與行星科學

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