The Nuclear Region of NGC 1365: Star Formation, Negative Feedback, and Outflow Structure

Abstract High-resolution observations of ionized and molecular gas in the nuclear regions galaxies are indispensable for delineating interplay star formation, gaseous inflows, stellar radiation, feedback processes. Combining our new Atacama Large Millimeter/submillimeter Array band 3 mapping archival Very Telescope/MUSE data, we present a spatially resolved analysis central 5.4 kpc region NGC 1365. We find formation rate/efficiency (SFR/SFE) inner circumnuclear ring is about 0.4/1.1 dex higher than outer regions. At linear resolution 180 pc, obtain superlinear Kennicutt–Schmidt law, demonstrating steeper slope (1.96 ± 0.14) previous results presumably based on lower-resolution observations. Compared to northeastern counterpart, southwestern dust lane shows lower SFE, but denser larger virial parameters. This consistent with an interpretation negative from active galactic nucleus (AGN) and/or starburst, sense that radiation/winds can heat interact even relatively dense After subtracting circular motion component rotation, detect two prominent noncircular components hydrogen gas, reaching line-of-sight velocity up 100 km s ?1 . conclude winds or shocked AGN may expel low-density diffuse surface rotating disk.