| Title | Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XII. Extended [C ii] Structure (Merger or Outflow) in a z=6.72 Red Quasar |
| Authors | Izumi, Takuma Onoue, Masafusa Matsuoka, Yoshiki Strauss, Michael A. Fujimoto, Seiji Umehata, Hideki Imanishi, Masatoshi Kawamuro, Taiki Nagao, Tohru Toba, Yoshiki Kohno, Kotaro Kashikawa, Nobunari Inayoshi, Kohei Kawaguchi, Toshihiro Iwasawa, Kazushi Inoue, Akio K. Goto, Tomotsugu Baba, Shunsuke Schramm, Malte Suh, Hyewon Harikane, Yuichi Ueda, Yoshihiro Silverman, John D. Hashimoto, Takuya Hashimoto, Yasuhiro Ikarashi, Soh Iono, Daisuke Lee, Chien-Hsiu Lee, Kianhong Minezaki, Takeo Nakanishi, Kouichiro Nakano, Suzuka Tamura, Yoichi Tang, Ji-Jia |
| Affiliation | Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan Grad Univ Adv Studies, Dept Astron Sci, SOKENDAI, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany Ehime Univ, Res Ctr Space & Cosm Evolut, 2-5 Bunkyo Cho, Matsuyama, Ehime 7908577, Japan Princeton Univ Observ, Peyton Hall, Princeton, NJ 08544 USA Cosm Dawn Ctr, Copenhagen, Denmark Univ Copenhagen, Niels Bohr Inst, Lyngbyvej 2, DK-2100 Copenhagen, Denmark RIKEN, Cluster Pioneering Res, 2-1 Hirosawa, Wako, Saitama 3510198, Japan Univ Tokyo, Inst Astron, Grad Sch Sci, 2-21-1 Osawa, Mitaka, Tokyo 1810015, Japan Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan Acad Sinica, Inst Astron & Astrophys, AS NTU, 11F Astron Math Bldg,1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan Univ Tokyo, Grad Sch Sci, Res Ctr Early Universe, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China Onomichi City Univ, Dept Econ Management & Informat Sci, 1600-2 Hisayamada, Hiroshima 7228506, Japan Univ Barcelona, ICREA, IEEC UB, Marti & Franques 1, E-08028 Barcelona, Spain Univ Barcelona, Inst Ciencies Cosmos, IEEC UB, Marti & Franques 1, E-08028 Barcelona, Spain Waseda Univ, Sch Adv Sci & Engn, Dept Phys, Fac Sci & Engn,Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan Waseda Univ, Waseda Res Inst Sci & Engn, Fac Sci & Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan Saitama Univ, Grad Sch Sci & Engn, Sakura Ku, 255 Shimo Okubo, Saitama, Saitama 3388570, Japan Natl Astron Observ Japan, Subaru Telescope, 650 North Aohoku Pl, Hilo, HI 96720 USA Gemini Observ, NSFs NOIRLab, 670 North Aohoku Pl, Hilo, HI 96720 USA Univ Tokyo, Inst Cosm Ray Res, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778582, Japan Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Inst Adv Study, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan Univ Tsukuba, Tomonaga Ctr Hist Universe, Fac Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan Natl Taiwan Normal Univ, Dept Earth Sci, Taipei 11677, Taiwan Univ Durham, Dept Phys, Ctr Extragalact Astron, South Rd, Durham DH1 3LE, England NSFs Natl Opt Infrared Astron Res Lab, 950 North Cherry Ave, Tucson, AZ 85719 USA Nagoya Univ, Grad Sch Sci, Div Particle & Astrophys Sci, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan Australian Natl Univ, Res Sch Astron & Astrophys, Cotter Rd, Weston, ACT 2611, Australia |
| Issue Date | Feb-2021 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | We present Atacama Large Millimeter/submillimeter Array [C ii] 158 mu m line and far-infrared (FIR) continuum emission observations toward HSC J120505.09-000027.9 (J1205-0000) at z = 6.72 with a beam size of similar to 08 x 05 (or 4.1 kpc x 2.6 kpc), the most distant red quasar known to date. Red quasars are modestly reddened by dust and are thought to be in rapid transition from an obscured starburst to an unobscured normal quasar, driven by powerful active galactic nucleus (AGN) feedback that blows out a cocoon of interstellar medium. The FIR continuum of J1205-0000 is bright, with an estimated luminosity of L-FIR similar to 3 x 10(12) L. The [C ii] line emission is extended on scales of r similar to 5 kpc, greater than that of the FIR continuum. The line profiles at the extended regions are complex and broad (FWHM similar to 630-780 km s(-1)). Although it is not practical to identify the nature of this extended structure, possible explanations include (i) companion/merging galaxies and (ii) massive AGN-driven outflows. For the case of (i), the companions are modestly star-forming (similar to 10 M yr(-1)) but are not detected by our Subaru optical observations (y(AB,5 sigma) = 24.4 mag). For the case of (ii), our lower limit to the cold neutral outflow rate is similar to 100 M yr(-1). The outflow kinetic energy and momentum are both much lower than predicted in energy-conserving wind models, suggesting that the AGN feedback in this quasar is not capable of completely suppressing its star formation. |
| URI | http://hdl.handle.net/20.500.11897/605206 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/abd7ef |
| Indexed | SCI(E) |
| Appears in Collections: | 科维理天文与天体物理研究所 |
