Izumi, TakumaOnoue, MasafusaMatsuoka, YoshikiNagao, TohruStrauss, Michael A.Imanishi, MasatoshiKashikawa, NobunariFujimoto, SeijiKohno, KotaroToba, YoshikiTang, Ji-Jia2022-07-291743-9221http://hdl.handle.net/1885/270031We 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) x 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 < 1011L⊙ to ∼2 x 1012L⊙. 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.application/pdfen-AU© International Astronomical Union 2020quasars: generalgalaxies: evolutiongalaxies: high-redshiftRapid evolution and transformation into quiescence?: ALMA view on z > 6 low-luminosity quasars202010.1017/S17439213190094872021-08-01