New JWST observations of Centaurus A detect H2 lines up to S(8) and map a warm molecular disk with a 20-pc cavity aligned to the jet, filamentary high-excitation structures, S-shaped kinematics, and an inward streamer, yielding a warm H2 mass of 5.6e5 solar masses heated by shocks.
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Active Galactic Nuclei are fueled from material (gas or stars) that are in general far away from the gravitational influence of the central black hole, the engine thought to be responsible for their activity. The required material has a lot of angular momentum, that is a priori quite difficult to evacuate. The various dynamical mechanisms that may play a role in this game are reviewed, including m=2 perturbations (bars and spirals), m=1 perturbations (spirals, warps, lopsidedness), and tidal interactions between galaxies and mergers. In the latest stages of the merger, a binary black hole could be formed, and its influence on the dynamics and fueling is discussed. Starbursts are often associated with AGN, and the nature of their particular connection, and their role in the nuclear fueling is described. Evolution of the fueling efficiency with redshift is addressed.
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MICONIC: The multiphase circumnuclear region of Centaurus A as seen with JWST/MIRI MRS observations. I. Spectral inventory and properties of the warm molecular disk
New JWST observations of Centaurus A detect H2 lines up to S(8) and map a warm molecular disk with a 20-pc cavity aligned to the jet, filamentary high-excitation structures, S-shaped kinematics, and an inward streamer, yielding a warm H2 mass of 5.6e5 solar masses heated by shocks.