Oral Presentation

Imaging the interstellar medium in the most distance quasar host galaxies

Author(s): Ran Wang(PKU), Yali Shao(PKU), Chris L. Carilli(NRAO), Gareth C. Jones(Cambridge), et al.

Presenter: Ran Wang (Kavli institute for astronomy and astrophysics, Peking University)

Bright dust continuum, molecular CO and [C II] 158 micron fine structure line
emission were detected in the host galaxies of quasars at the highest redshift, indicating massive star formation and supermassive black hole-galaxy co-evolution at the earliest epoch. We present ALMA high-resolution images of the [C II] 158 micron line and dust continuum emission from the quasar host galaxies at z~6. These observations resolve the [C II] line emission on kpc scale, probing the gas/dust distribution and gas kinematics in the nuclear region. The gas velocity maps and PV-diagram reveal rich features of kinematic activities, including rotation and/or turbulent clumps with velocity offsets. These observations provide constraints on the dynamical mass of the quasar hosts, and probe the physical conditions of the interstellar medium powered by both AGN and star formation activities at an early evolutionary stage.