2021A&A...655A..25Z


Query : 2021A&A...655A..25Z

2021A&A...655A..25Z - Astronomy and Astrophysics, volume 655A, 25-25 (2021/11-1)

The IBISCO survey. I. Multiphase discs and winds in the Seyfert galaxy Markarian 509.

ZANCHETTIN M.V., FERUGLIO C., BISCHETTI M., MALIZIA A., MOLINA M., BONGIORNO A., DADINA M., GRUPPIONI C., PICONCELLI E., TOMBESI F., TRAVASCIO A. and FIORE F.

Abstract (from CDS):

We present the analysis of the ALMA CO(2-1) emission line and the underlying 1.2 mm continuum of Mrk 509 with spatial resolution of ∼270pc. This local Seyfert 1.5 galaxy, optically classified as a spheroid, is known to host an ionised disc, a starburst ring, and ionised gas winds on both nuclear (ultra-fast outflows) and galactic scales. From CO(2-1) we estimate a molecular gas reservoir of MH2=1.7x109M, located within a disc of size ∼5.2kpc, with Mdyn=(2.0±1.1)x1010M inclined at 44±10deg. The molecular gas fraction within the disc is µgas=5%, consistent with that of local star-forming galaxies with similar stellar mass. The gas kinematics in the nuclear region within r∼700pc, that is only marginally resolved at the current angular resolution, 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 destabilisation, feeding both star formation and AGN activity. The spatially resolved Toomre Q-parameter across the molecular disc is in the range Qgas=0.5-10, and shows that the disc is marginally unstable across the starburst ring, and stable against fragmentation at nucleus and in a lopsided ring-like structure located inside of the starburst ring. We find complex molecular gas kinematics and significant kinematics perturbations at two locations, one within 300 pc of the nucleus and one 1.4kpc away close to the region with high Qgas, that we interpret as molecular winds with velocity v98=200-250km/s. The total molecular outflow rate is in the range 6.4-17.0M/yr for the optically thin and thick cases, respectively. The molecular wind total kinetic energy is consistent with a multiphase momentum-conserving wind driven by the AGN with Pof/Prad in the range 0.06-0.5. The spatial overlap of the inner molecular wind with the ionised wind, and their similar velocity suggest a cooling sequence within a multiphase wind driven by the AGN. The second outer molecular wind component overlaps with the starburst ring, and its energy is consistent with a supernova-driven wind arising from the starburst ring.

Abstract Copyright: © ESO 2021

Journal keyword(s): galaxies: active - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: Seyfert - techniques: interferometric

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 IRAS 11119+3257 Sy1 11 14 38.8902542640 +32 41 33.483258276   19.22 17.96     ~ 135 1
2 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1930 3
3 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4165 4
4 QSO B1725-142 QSO 17 28 19.7893499760 -14 15 55.854918288   14.69 14.03 13.7   ~ 284 0
5 QSO B1958-179 QSO 20 00 57.09043927 -17 48 57.6726139   18.02 17.46 15.33   ~ 246 1
6 QSO B2022-077 BLL 20 25 40.6602562440 -07 35 52.688047128   18.5       ~ 187 3
7 Mrk 509 Sy1 20 44 09.7504483224 -10 43 24.727155528   13.35 13.12 10.7   ~ 1225 0
8 4C 06.69 QSO 21 48 05.45866779 +06 57 38.6041877   16.85 16.47 15.06   ~ 643 1

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2023.02.04-10:16:18

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