Co-evolution of massive black holes and their host galaxies up to z ~ 2 with COSMOS-Web, a large JWST program
Detection of stellar light from quasar host galaxies at z > 6 with JWST
Kalita, Silverman, Daddi et al. 2023
Quasar host galaxies with
Subaru's Hyper Suprime-Cam
Decomposition of 5000 quasars and their host galaxies with the HSC Subaru Strategic Program. Black hole growth may be linked to more compact galaxies (Li et al. 2021a, 2024) and co-evolving with their host galaxies (Li, Silverman et al. 2021b, Ding et al. 2022). Further, machine learning is implemented to discern host substructures (Nagele et al. 2023).
Dual quasars
The remarkable spatial resolution of optical imaging from the Hyper Suprime-Cam Subaru Strategic Program has revealed a population of previously known quasars that have two supermassive black holes in close proximity to each other (Silverman et al. 2020) with the most distant case reported at z =3.1 (Tang et al. 2021).
Gas in colliding galaxies
ALMA observations (Silverman et al. 2020) of the molecular gas as traced by CO (J = 5 - 4) in a merger at z=1.52 reveals two possibly counter-rotating disks interacting and powering starburst activity in each galaxy. Furthermore, diffuse CO emission is evident likely stripped due to the close encounter.
