No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000
HSC 120505.09-000027.9 (J1205–0000) is one of the highest redshift ( z = 6.72) dust-reddened quasars (red quasars) known to date. We present an improved analysis of Atacama Large Millimeter/submillimeter Array data of the [C ii ] 158 μ m line and the underlying rest-frame far-infrared (FIR) continu...
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2025-01-01
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| author | Mahoshi Sawamura Takuma Izumi Kouichiro Nakanishi Takeshi Okuda Michael A. Strauss Masatoshi Imanishi Yoshiki Matsuoka Yoshiki Toba Hideki Umehata Takuya Hashimoto Shunsuke Baba Tomotsugu Goto Toshihiro Kawaguchi Kotaro Kohno Dragan Salak Taiki Kawamuro Kazushi Iwasawa Masafusa Onoue Chien-Hsiu Lee Kianhong Lee |
| author_facet | Mahoshi Sawamura Takuma Izumi Kouichiro Nakanishi Takeshi Okuda Michael A. Strauss Masatoshi Imanishi Yoshiki Matsuoka Yoshiki Toba Hideki Umehata Takuya Hashimoto Shunsuke Baba Tomotsugu Goto Toshihiro Kawaguchi Kotaro Kohno Dragan Salak Taiki Kawamuro Kazushi Iwasawa Masafusa Onoue Chien-Hsiu Lee Kianhong Lee |
| author_sort | Mahoshi Sawamura |
| collection | DOAJ |
| description | HSC 120505.09-000027.9 (J1205–0000) is one of the highest redshift ( z = 6.72) dust-reddened quasars (red quasars) known to date. We present an improved analysis of Atacama Large Millimeter/submillimeter Array data of the [C ii ] 158 μ m line and the underlying rest-frame far-infrared (FIR) continuum emission, previously reported in T. Izumi et al. (2021b), toward J1205–0000. Red quasars are thought to be a transitional phase from an obscured starburst to a luminous blue quasar, in some cases associated with massive outflows driven by the active galactic nucleus (AGN). J1205–0000 has a high FIR luminosity, L _FIR = 2.5 × 10 ^12 L _⊙ and a total IR luminosity of L _TIR = 3.5 × 10 ^12 L _⊙ , corresponding to a star formation rate of ∼528 M _⊙ yr ^−1 . With the [C ii ]-based dynamical mass of ∼1 × 10 ^11 M _⊙ , we conclude that J1205–0000 is hosted by a starburst galaxy. In contradiction to T. Izumi et al., our improved analysis shows no hint of a broad component in the [C ii ] line spectrum. Thus there is no evidence for a host galaxy-scale fast [C ii ] outflow, despite the fact that J1205–0000 has fast nuclear ionized outflows seen in the rest-frame UV. We explore several scenarios for this discrepancy (e.g., the early phase of AGN feedback, reliability of the [C ii ] line as a tracer of outflows), and we claim that it is still too early to conclude that there is no significant negative AGN feedback on star formation in this red quasar. |
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| spelling | doaj-art-ddbcf44cf66248b792c6ae1de69000642025-02-07T08:56:38ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01980112110.3847/1538-4357/ada943No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000Mahoshi Sawamura0https://orcid.org/0009-0003-5438-8303Takuma Izumi1https://orcid.org/0000-0001-9452-0813Kouichiro Nakanishi2https://orcid.org/0000-0002-6939-0372Takeshi Okuda3https://orcid.org/0000-0001-7407-5329Michael A. Strauss4https://orcid.org/0000-0002-0106-7755Masatoshi Imanishi5https://orcid.org/0000-0001-6186-8792Yoshiki Matsuoka6https://orcid.org/0000-0001-5063-0340Yoshiki Toba7https://orcid.org/0000-0002-3531-7863Hideki Umehata8https://orcid.org/0000-0003-1937-0573Takuya Hashimoto9https://orcid.org/0000-0002-0898-4038Shunsuke Baba10https://orcid.org/0000-0002-9850-6290Tomotsugu Goto11https://orcid.org/0000-0002-6821-8669Toshihiro Kawaguchi12https://orcid.org/0000-0002-3866-9645Kotaro Kohno13https://orcid.org/0000-0002-4052-2394Dragan Salak14https://orcid.org/0000-0002-3848-1757Taiki Kawamuro15https://orcid.org/0000-0002-6808-2052Kazushi Iwasawa16https://orcid.org/0000-0002-4923-3281Masafusa Onoue17https://orcid.org/0000-0003-2984-6803Chien-Hsiu Lee18https://orcid.org/0000-0003-1700-5740Kianhong Lee19https://orcid.org/0000-0003-4814-0101Department of Astronomy, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, JapanNational Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Department of Astronomical Science , SOKENDAI (The Graduate University for Advanced Studies), Mitaka, Tokyo 181-8588, JapanNational Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Department of Astronomical Science , SOKENDAI (The Graduate University for Advanced Studies), Mitaka, Tokyo 181-8588, JapanDepartment of Astronomy, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, JapanDepartment of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USANational Astronomical Observatory of Japan , National Institutes of Natural Sciences (NINS), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, JapanResearch Center for Space and Cosmic Evolution, Ehime University Matsuyama , Ehime 790-8577, JapanNational Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No.1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; Research Center for Space and Cosmic Evolution, Ehime University , 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, JapanInstitute for Advanced Research, Nagoya University , Furocho, Chikusa, Nagoya 464-8602, Japan; Department of Physics, Graduate School of Science, Nagoya University , Furocho, Chikusa, Nagoya 464-8602, JapanDivision of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba , Tsukuba, Ibaraki 305-8571, Japan; Tomonaga Center for the History of the Universe (TCHoU), Faculty of Pure and Applied Sciences, University of Tsukuba , Tsukuba, Ibaraki 305-8571, JapanInstitute of Space and Astronautical Science (ISAS) , Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, JapanInstitute of Astronomy, National Tsing Hua University , No.101, Section 2, Kuang-Fu Road, Hsinchu 30013, TaiwanDepartment of Economics, Management and Information Science, Onomichi City University , Hisayamada 1600-2, Onomichi, Hiroshima 722-8506, JapanInstitute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan; Research Center for the Early Universe, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, JapanInstitute for the Advancement of Higher Education, Hokkaido University , Kita 17 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0817, Japan; Department of Cosmosciences, Graduate School of Science, Hokkaido University , Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, JapanRIKEN Cluster for Pioneering Research , 2-1 Hirosawa, Wako, Saitama 351-0198, JapanInstitut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB) , Martí i Franquès, 1, 08028 Barcelona, Spain; ICREA , Pg. Lluís Companys 23, 08010 Barcelona, SpainKavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan; Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People’s Republic of China; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, JapanW. M. Keck Observatory , 65-1120 Mamalahoa Hwy, Kamuela, HI 96743, USANational Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Institute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan; Astronomical Institute, Tohoku University , Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, JapanHSC 120505.09-000027.9 (J1205–0000) is one of the highest redshift ( z = 6.72) dust-reddened quasars (red quasars) known to date. We present an improved analysis of Atacama Large Millimeter/submillimeter Array data of the [C ii ] 158 μ m line and the underlying rest-frame far-infrared (FIR) continuum emission, previously reported in T. Izumi et al. (2021b), toward J1205–0000. Red quasars are thought to be a transitional phase from an obscured starburst to a luminous blue quasar, in some cases associated with massive outflows driven by the active galactic nucleus (AGN). J1205–0000 has a high FIR luminosity, L _FIR = 2.5 × 10 ^12 L _⊙ and a total IR luminosity of L _TIR = 3.5 × 10 ^12 L _⊙ , corresponding to a star formation rate of ∼528 M _⊙ yr ^−1 . With the [C ii ]-based dynamical mass of ∼1 × 10 ^11 M _⊙ , we conclude that J1205–0000 is hosted by a starburst galaxy. In contradiction to T. Izumi et al., our improved analysis shows no hint of a broad component in the [C ii ] line spectrum. Thus there is no evidence for a host galaxy-scale fast [C ii ] outflow, despite the fact that J1205–0000 has fast nuclear ionized outflows seen in the rest-frame UV. We explore several scenarios for this discrepancy (e.g., the early phase of AGN feedback, reliability of the [C ii ] line as a tracer of outflows), and we claim that it is still too early to conclude that there is no significant negative AGN feedback on star formation in this red quasar.https://doi.org/10.3847/1538-4357/ada943AGN host galaxiesActive galactic nucleiActive galaxiesLow-luminosity active galactic nucleiQuasarsRadio interferometry |
| spellingShingle | Mahoshi Sawamura Takuma Izumi Kouichiro Nakanishi Takeshi Okuda Michael A. Strauss Masatoshi Imanishi Yoshiki Matsuoka Yoshiki Toba Hideki Umehata Takuya Hashimoto Shunsuke Baba Tomotsugu Goto Toshihiro Kawaguchi Kotaro Kohno Dragan Salak Taiki Kawamuro Kazushi Iwasawa Masafusa Onoue Chien-Hsiu Lee Kianhong Lee No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 The Astrophysical Journal AGN host galaxies Active galactic nuclei Active galaxies Low-luminosity active galactic nuclei Quasars Radio interferometry |
| title | No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 |
| title_full | No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 |
| title_fullStr | No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 |
| title_full_unstemmed | No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 |
| title_short | No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000 |
| title_sort | no galaxy scale c ii fast outflow in the z 6 72 red quasar hsc j1205 0000 |
| topic | AGN host galaxies Active galactic nuclei Active galaxies Low-luminosity active galactic nuclei Quasars Radio interferometry |
| url | https://doi.org/10.3847/1538-4357/ada943 |
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