Poster Presentation

Tracing AGN Contribution and Abundance Across Cosmic Time with JWST

Author(s): Angel Rodriguez (National Tsing Hua University), Tomotsugu Goto (National Tsing Hua University), Daryl Joe D. Santos (De La Salle University), Chih-Teng Ling (Department of Astronomical Science SOKENDAI), Tetsuya Hashimoto (National Chung Hsing University), Terry Phan (National Tsing Hua University), Deriyan Senjaya (National Tsing Hua University), Vignesh Vavillakula (National Chung Hsing University), Ece Kilerci (Istanbul University)

Presenter: Angel Rodriguez barbosa (National Tsing Hua University)

Dust-obscured active galactic nuclei (AGN) are believed to play a key role in galaxy evolution, yet many remain undetected in ultraviolet and optical surveys due to heavy dust attenuation. We use a merged catalog from the JWST Systematic Mid-infrared Instrument Legacy Extragalactic Survey (SMILES) and the JWST Advanced Deep Extragalactic Survey (JADES), providing continuous mid-infrared (5–25 μm) and optical–to-near-infrared coverage in the GOODS-S field that allows us to open a window and pierce into the dust-obscured domain. Galaxy physical properties are derived using optical-to–mid-infrared SED fitting with CIGALE, allowing us to quantify AGN infrared contribution, activity and populations. We investigate the evolution of AGN infrared contribution and AGN number fraction as a function of redshift and total infrared luminosity. These trends can give us insight on how potent AGNs are at high redshift and their abundance. In our results, we find that both quantities increase with redshift, while decreasing with increasing total infrared luminosity, particularly at higher redshifts. These results highlight the power of JWST mid-infrared observations by revealing previously hidden AGN populations and improving our understanding of AGN demographics across cosmic time.