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

Izumi, Takuma; Matsuoka, Yoshiki; Fujimoto, Seiji; Onoue, Masafusa; Strauss, Michael A.; Umehata, Hideki; Imanishi, Masatoshi; Kohno, Kotaro; Kawaguchi, Toshihiro; Kawamuro, Taiki; Baba, Shunsuke; Nagao, Tohru; Toba, Yoshiki; Inayoshi, Kohei; Silverman, John D.; Inoue, Akio K.; Ikarashi, Soh; Iwasawa, Kazushi; Kashikawa, Nobunari; Hashimoto, Takuya; Nakanishi, Kouichiro; Ueda, Yoshihiro; Schramm, Malte; Lee, Chien-Hsiu; Suh, Hyewon

doi:10.3847/1538-4357/abf6dc

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

Izumi, Takuma; Matsuoka, Yoshiki; Fujimoto, Seiji; Onoue, Masafusa; Strauss, Michael A.; Umehata, Hideki; Imanishi, Masatoshi; Kohno, Kotaro; Kawaguchi, Toshihiro; Kawamuro, Taiki; Baba, Shunsuke; Nagao, Tohru; Toba, Yoshiki; Inayoshi, Kohei; Silverman, John D.; Inoue, Akio K.; Ikarashi, Soh; Iwasawa, Kazushi; Kashikawa, Nobunari; Hashimoto, Takuya; Nakanishi, Kouichiro; Ueda, Yoshihiro; Schramm, Malte; Lee, Chien-Hsiu; Suh, Hyewon

Authors

Takuma Izumi

Yoshiki Matsuoka

Seiji Fujimoto

Masafusa Onoue

Michael A. Strauss

Hideki Umehata

Masatoshi Imanishi

Kotaro Kohno

Toshihiro Kawaguchi

Taiki Kawamuro

Shunsuke Baba

Tohru Nagao

Yoshiki Toba

Kohei Inayoshi

John D. Silverman

Akio K. Inoue

Soh Ikarashi

Kazushi Iwasawa

Nobunari Kashikawa

Takuya Hashimoto

Kouichiro Nakanishi

Yoshihiro Ueda

Malte Schramm

Chien-Hsiu Lee

Hyewon Suh

Abstract

We present Atacama Large Millimeter/submillimeter Array [C II] 158 μm line and underlying far-infrared (FIR) continuum emission observations (0 70 × 0 56 resolution) toward HSC J124353.93+010038.5 (J1243+0100) at z = 7.07, the only low-luminosity (M1450 > −25 mag) quasar currently known at z > 7. The FIR continuum is bright (1.52 mJy) and resolved with a total luminosity of LFIR = 3.5 × 1012 Le. The spatially extended component is responsible for ∼40% of the emission. The area-integrated [C II] spectrum shows a broad wing (FWHM = 997 km s−1 , L[C II] = 1.2 × 109 Le), as well as a bright core (FWHM = 235 km s−1 , L[C II] = 1.9 × 109 Le). This wing is the first detection of a galactic-scale quasar-driven outflow (atomic outflow rate >447 Me yr−1 ) at z > 7. The estimated large mass-loading factor of the total outflow (e.g., 9 relative to the [C II]-based star formation rate) suggests that this outflow will soon quench the star formation of the host. The core gas dynamics are governed by rotation, with a rotation curve suggestive of a compact bulge (∼3.3 × 1010 Me), although it is not yet spatially resolved. Finally, we found that J1243+0100 has a black hole mass–to–dynamical mass (and –to–bulge mass) ratio of ∼0.4% (∼1%), consistent with the local value within the uncertainties. Our results therefore suggest that the black hole–host coevolution relation is already in place at z ∼ 7 for this object.

Citation

Izumi, T., Matsuoka, Y., Fujimoto, S., Onoue, M., Strauss, M. A., Umehata, H., …Suh, H. (2021). 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. Astrophysical Journal, 914(1), Article 36. https://doi.org/10.3847/1538-4357/abf6dc

Journal Article Type	Article
Acceptance Date	Apr 10, 2021
Online Publication Date	Jun 14, 2021
Publication Date	Jun 10, 2021
Deposit Date	Jan 13, 2022
Publicly Available Date	Jan 13, 2022
Journal	Astrophysical Journal
Print ISSN	0004-637X
Electronic ISSN	1538-4357
Publisher	American Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	914
Issue	1
Article Number	36
DOI	https://doi.org/10.3847/1538-4357/abf6dc