Posterior distributions of AGN parameters in 88 X-ray selected AGN at cosmic noon
There is an evidence for significant evolution in the gaseous and dust properties of galaxies since the era of cosmic noon (1 < z < 2.5). It is also well known that supermassive black holes co-evolve with their host galaxies, suggesting a constant connection between the small-scale (nuclear) and large-scale regions of galaxies. A fundamental component of Active Galactic Nuclei (AGN) is the "torus", a dense, dusty structure that acts as the interface between the accretion disc and the ISM of the host galaxy. One may speculate that the transitional nature of the torus makes it a prime subject to search for evolution since cosmic noon. In this work, we use JWST high resolution near- and mid-IR imaging from the CEERS survey to disentangle the emission from the torus in unprecedented detail for X-ray selected AGN at z ~ 2. Combining low-resolution multi-band photometry at UV to FIR wavelengths, from the archival CANDELS and HELP surveys, with the high-resolution JWST photometry, we employ a novel SED fitting method to constrain essential AGN and torus parameters, such as accretion disc luminosity, torus opening angle, and inclination angle. Despite the well-known evolution of the ISM and structural properties of AGN hosts to these redshifts, our population-level analysis finds no clear evidence for the evolution of the torus when compared to similar local AGN.
This dataset provides the posterior distributions of 14 galaxy and AGN parameters and 1 derived AGN paramter for all 88 sources in our sample. These posterior distributions were obtained by SED fitting as described in the accompanying paper.
Funding
NUdata - STFC Centre for Doctoral Training in Data Intensive Science
Science and Technology Facilities Council
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