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
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
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DOI：
10.3847/1538-4357/abf6dc
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发表时间：
2021-04
期刊：
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通讯作者：
T. Izumi;Y. Matsuoka;S. Fujimoto;M. Onoue;M. Strauss;H. Umehata;M. Imanishi;K. Kohno;T. Kawaguchi;T. Kawamuro;S. Baba;T. Nagao;Y. Toba;K. Inayoshi;J. Silverman;A. Inoue;S. Ikarashi;K. Iwasawa;N. Kashikawa;T. Hashimoto;K. Nakanishi;Y. Ueda;M. Schramm;Chien-Hsiu Lee;H. Suh
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作者：
T. Izumi;Y. Matsuoka;S. Fujimoto;M. Onoue;M. Strauss;H. Umehata;M. Imanishi;K. Kohno;T. Kawaguchi;T. Kawamuro;S. Baba;T. Nagao;Y. Toba;K. Inayoshi;J. Silverman;A. Inoue;S. Ikarashi;K. Iwasawa;N. Kashikawa;T. Hashimoto;K. Nakanishi;Y. Ueda;M. Schramm;Chien-Hsiu Lee;H. Suh
我们展示了Atacama大型毫米/亚毫米阵列[C ii] 158 μm线和底层远红外（FIR）连续发射观测(0。″70 × 0。到HSC J124353.93+010038.5 (J1243+0100)，在z = 7.07，唯一的低亮度（M 1450 > - 25等）类星体，目前已知的z > 7。FIR连续体明亮（1.52 mJy），总光度为L FIR = 3.5 × 1012 L⊙。空间扩展分量占排放的约40%。面积积分[C ii]光谱显示出宽翼（FWHM = 997 km s−1,L [C ii] = 1.2 × 109 L⊙）和明亮的核心（FWHM = 235 km s−1,L [C ii] = 1.9 × 109 L⊙）。这是第一次在z > 7探测到星系尺度的类星体驱动的流出（原子流出率>447 M⊙yr−1）。估计总流出的大质量负荷因子（例如，相对于基于[C ii]的恒星形成速率，约为> 9）表明这种流出将很快使宿主的恒星形成停止。地核气体动力学是由旋转控制的，其旋转曲线暗示了一个致密的凸起（~ 3.3 × 1010 M⊙），尽管它还没有在空间上得到解决。最后，我们发现J1243+0100的黑洞质量与动力质量（以及与凸起质量）之比为~ 0.4%(~ 1%)，与不确定度内的局域值一致。因此，我们的结果表明，黑洞与宿主的共同进化关系在z ~ 7处已经存在。
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 (M 1450 > −25 mag) quasar currently known at z > 7. The FIR continuum is bright (1.52 mJy) and resolved with a total luminosity of L FIR = 3.5 × 1012 L ⊙. 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 L ⊙), as well as a bright core (FWHM = 235 km s−1, L [C ii] = 1.9 × 109 L ⊙). This wing is the first detection of a galactic-scale quasar-driven outflow (atomic outflow rate >447 M ⊙ 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 M ⊙), 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.