To Deeply Investigate Distant Quasars Using JWST and ALMA


I am leading several JWST and ALMA programs to study a sample of reionization-era luminous quasars with multi-wavelength imaging and spectropscopic observations. Our targets include a well selected z ~ 6.5 - 6.8 quasar sample, a massive z = 6.6 proto-culster anchored by luminous quasar, a dust reddened z = 7.1 quasar, and the three most distant known quasars at z > 7.5 (link). The transformational ability of JWST will allow observations of these quasars with wide wavelength coverage, high spatial resolution, and high sensitivity. Together with ALMA, the in-depth observations covering 30 quasars at z ~ 6.5 - 7.6 will allow a panchromatic view of the quasar central engine and host galaxy assembly. I also participate in other three JWST programs focusing on high-redshift quasar-companion system, reionization history, and faint reionization-era quasars. These upcoming data will revolutionize our understanding of these earliest supermassive black holes and their host galaixes. JWST observations have started in August 2022.

An early paper of quasar rest-frame optical emission and BH mass has been published:
A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): A First Look at the Rest-frame Optical Spectra of z > 6.5 Quasars Using JWST

  • JWST Cycle 2, 45.3 hours, Mapping the Most Extreme Protoclusters in the Epoch of Reionization. Co-PI

  • JWST Cycle 1, 65.5 (Prime)/8.1 (parallel) hours, A Comprehensive JWST View of the Most Distant Quasars Deep into the Epoch of Reionization. Co-PI & Contact

  • JWST Cycle 1, 62/29.5 hours, A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A JWST Quasar Legacy Survey. Core member

  • JWST Cycle 1, 6.0 hours, Monster in the Early Universe: Unveiling the Nature of a Dust Reddened Quasar Hosting a Ten-Billion Solar Mass Black Hole at z = 7.1. PI

  • JWST Cycle 1, 16.3/5.6 hours, Mapping a Distant Protocluster Anchored by a Luminous Quasar in the Epoch of Reionization. Co-PI

  • ALMA Cycle 9, 29.8 hours, The Assembly of the Earliest Massive Quasar Host Galaxies. PI

  • ALMA Cycle 9, 6.8 hours, A Multi-wavelength View of the Host Galaxy of the Earliest Supermassive Black Hole in the Universe. PI

  • ALMA Cycle 9, 99.9 hours, A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): An ALMA/JWST Quasar Legacy Redshift Survey. Co-PI

  • ALMA Cycle 8, 36.5 hours, The Assembly of the Earliest Massive Quasar Host Galaxies. PI

  • ALMA Cycle 8, 1.7 hours, Unveiling the Nature of a Dust-reddened Quasar Hosting a Ten-Billion Solar Mass Black Hole at z=7.1. PI

  • ALMA Cycle 6, 15.8 hours, ALMA Mapping of the Most Distant Proto-Cluster. PI