Bibliographic Details
| Title: |
A Spatially Resolved [C ii] Survey of 31 z ∼ 7 Massive Galaxies Hosting Luminous Quasars |
| Authors: |
Feige Wang, Jinyi Yang, Xiaohui Fan, Bram Venemans, Roberto Decarli, Eduardo Bañados, Fabian Walter, Aaron J. Barth, Fuyan Bian, Frederick B. Davies, Anna-Christina Eilers, Emanuele Paolo Farina, Joseph F. Hennawi, Jiang-Tao Li, Chiara Mazzucchelli, Ran Wang, Xue-Bing Wu, Minghao Yue |
| Source: |
The Astrophysical Journal, Vol 968, Iss 1, p 9 (2024) |
| Publisher Information: |
IOP Publishing, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Astrophysics |
| Subject Terms: |
Early universe, Galaxies, Quasars, Supermassive black holes, Astrophysics, QB460-466 |
| More Details: |
The [C ii ] 158 μ m emission line and the underlying far-infrared (FIR) dust continuum are important tracers for studying star formation and kinematic properties of early galaxies. We present a survey of the [C ii ] emission lines and FIR continua of 31 luminous quasars at z > 6.5 using the Atacama Large Millimeter Array (ALMA) and the NOrthern Extended Millimeter Array at sub-arcsec resolution. This survey more than doubles the number of quasars with [C ii ] and FIR observations at these redshifts and enables statistical studies of quasar host galaxies deep into the epoch of reionization. We detect [C ii ] emission in 27 quasar hosts with a luminosity range of L _[C _II _] = (0.3–5.5) × 10 ^9 L _⊙ and detect the FIR continuum of 28 quasar hosts with a luminosity range of L _FIR = (0.5–13.0) × 10 ^12 L _⊙ . Both L _[C _II _] and L _FIR are correlated ( ρ ≃ 0.4) with the quasar bolometric luminosity, albeit with substantial scatter. The quasar hosts detected by ALMA are clearly resolved with a median diameter of ∼5 kpc. About 40% of the quasar host galaxies show a velocity gradient in [C ii ] emission, while the rest show either dispersion-dominated or disturbed kinematics. Basic estimates of the dynamical masses of the rotation-dominated host galaxies yield M _dyn = (0.1–7.5) × 10 ^11 M _⊙ . Considering our findings alongside those of literature studies, we found that the ratio between M _BH and M _dyn is about 10 times higher than that of local M _BH – M _dyn relation on average but with substantial scatter (the ratio difference ranging from ∼0.6 to 60) and large uncertainties. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1538-4357 |
| Relation: |
https://doaj.org/toc/1538-4357 |
| DOI: |
10.3847/1538-4357/ad3fb4 |
| Access URL: |
https://doaj.org/article/3ca5a648856e4c0c9c5a76b59ee3cf9e |
| Accession Number: |
edsdoj.3ca5a648856e4c0c9c5a76b59ee3cf9e |
| Database: |
Directory of Open Access Journals |
