Feeding and feedback in nuclei of galaxies

TL;DR

This paper uses high-resolution ALMA observations to study the cold gas dynamics near active galactic nuclei, revealing feeding spirals and feedback outflows that influence galaxy evolution.

Contribution

It provides new high-resolution observations of AGN feeding and feedback mechanisms in nearby galaxies, highlighting the role of molecular spirals and outflows.

Findings

Detection of trailing spirals within 100pc driving gas into SMBH

Observation of molecular outflows driven by AGN activity

Preliminary evidence of radio jet-induced winds affecting galaxy evolution

Abstract

Our aim is to explore the close environment of Active Galactic Nuclei (AGN) and its connection to the host galaxy through the morphology and dynamics of the cold gas inside the central kpc in nearby AGN. We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of AGN feeding and feedback caught in action in NGC613 and NGC1808 at high resolution (few pc), part of the NUclei of GAlaxies (NUGA) project. We detected trailing spirals inside the central 100pc, efficiently driving the molecular gas into the SMBH, and molecular outflows driven by the AGN. We present preliminary results of the impact of massive winds induced by radio jets on galaxy evolution, based on observations of radio galaxies from the ALMA Radio-source Catalogue.