The IBISCO survey: I. Multiphase discs and winds in the Seyfert galaxy Markarian 509
M.V. Zanchettin, C. Feruglio, M. Bischetti, A. Malizia, M. Molina, A., Bongiorno, M. Dadina, C. Gruppioni, E. Piconcelli, F. Tombesi, A. Travascio, and F. Fiore

TL;DR
This study analyzes ALMA observations of Mrk509, revealing a complex, multiphase molecular gas environment with winds and signs of galaxy interactions, shedding light on AGN feeding and feedback mechanisms.
Contribution
First detailed ALMA CO(2-1) analysis of Mrk509 showing multiphase gas, winds, and merger signatures, advancing understanding of AGN-host galaxy interactions.
Findings
Molecular gas mass estimated at 1.7×10^9 M_sun within a 5.2 kpc disc.
Detection of molecular winds with outflow rates 6.4-17.0 M_sun/yr.
Evidence of a warped nuclear disc and signs of galaxy merger influence.
Abstract
We present the analysis of the ALMA CO(2-1) emission line and the underlying 1.2 mm continuum of Mrk509 with spatial resolution of 270 pc. This local Seyfert 1.5 galaxy, optically classified as a spheroid, is known to host a ionised disc, a starburst ring, and ionised gas winds on both nuclear and galactic scales. From CO(2-1) we estimate a molecular gas mass , located within a disc of size 5.2 kpc, with =(2.01.1) inclined at deg. The molecular gas fraction within the disc is . The gas kinematics in the nuclear region within r=700 pc suggests the presence of a warped nuclear disc. Both the presence of a molecular disc with ongoing star-formation in a starburst ring, and the signatures of a minor merger, are in agreement with the scenario where galaxy mergers produce gas…
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Taxonomy
TopicsPhase Equilibria and Thermodynamics · Astrophysics and Star Formation Studies · Astronomy and Astrophysical Research
