Preview

PDF, English - main document Download (40MB) | Lizenz: Three-dimensional view of circumgalactic to interstellar medium around distant radio galaxies by Wang, Wuji underlies the terms of Creative Commons Attribution 4.0

Abstract

High-redshift radio galaxies (HzRGs, z ≳ 2) represent a unique population of luminous active galactic nuclei (AGN), enabling the simultaneous examination of jet-mode and radiative-mode feedback in massive galaxies. This thesis focuses on the gaseous medium from circumgalactic to interstellar medium (CGM to ISM) scales around the most well-observed HzRGs sample, leveraging multiwavelength 3D information from integral field spectrographs. The lives of galaxies are shaped both by internal processes and their environment. The ISM and CGM are thus key components in galaxy evolution as sites of energy exchange, chemical enrichment and material cycling. Using MUSE, I conducted the first systematic analysis of ∼ 100 kpc intrinsic Lyα nebulae (corrected for H I absorption) for the eight HzRGs. Our characterization of CGM gas properties enables a cross-comparison to different quasar species. The ISM within HzRGs however has remained poorly understood prior to the JWST era. I have analyzed the warm ionized gas on galactic scales using JWST/NIRSpec IFU with sub-kpc resolution, revealing inefficient radiatively driven outflows in one HzRG, potentially implying that jet-mode feedback dominates. Overall, this thesis initiates the 3D analysis of distant AGN, with legacy datasets spanning from the rest frame UV to far infrared (e.g., ALMA).