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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29245
Title: MAGNUM survey: A MUSE-Chandra resolved view on ionized outflows and photoionization in the Seyfert galaxy NGC1365
Authors: VENTURI, GIACOMO
NARDINI, EMANUELE 
Marconi, Alessandro 
Carniani, Stefano
MINGOZZI, MATILDE 
CRESCI, GIOVANNI 
MANNUCCI, FILIPPO 
RISALITI, Guido
Maiolino, Roberto
BALMAVERDE, Barbara 
BONGIORNO, ANGELA 
Brusa, Marcella
CAPETTI, Alessandro 
CICONE, CLAUDIA 
Ciroi, Stefano
Feruglio, Chiara 
FIORE, Fabrizio 
GALLAZZI, Anna Rita 
LA FRANCA, FABIO
MAINIERI, VINCENZO
Matsuoka, Kenta
Nagao, Tohru
PERNA, MICHELE
PICONCELLI, Enrico 
Sani, Eleonora
TOZZI, Paolo 
ZIBETTI, Stefano 
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 619
First Page: A74
Abstract: Context. Ionized outflows, revealed by broad asymmetric wings of the [O III] λ5007 line, are commonly observed in active galactic nuclei (AGN) but the low intrinsic spatial resolution of the observations has generally prevented a detailed characterization of their properties. The MAGNUM survey aims at overcoming these limitations by focusing on the nearest AGN, including NGC 1365, a nearby Seyfert galaxy (D ∼ 17 Mpc), hosting a low-luminosity active nucleus (L<SUB>bol</SUB> ∼ 2 × 10<SUP>43</SUP> erg s<SUP>-1</SUP>). <BR /> Aims: We want to obtain a detailed picture of the ionized gas in the central ∼5 kpc of NGC 1365 in terms of physical properties, kinematics, and ionization mechanisms. We also aim to characterize the warm ionized outflow as a function of distance from the nucleus and its relation with the nuclear X-ray wind. <BR /> Methods: We employed optical integral-field spectroscopic observations from VLT/MUSE to investigate the warm ionized gas and Chandra ACIS-S X-ray data for the hot highly-ionized phase. We obtained flux, kinematic, and diagnostic maps of the optical emission lines, which we used to disentangle outflows from gravitational motions in the disk and measure the gas properties down to a spatial resolution of ∼70 pc. We then performed imaging spectroscopy on Chandra ACIS-S data guided by the matching with MUSE maps. <BR /> Results: The [O III] emission mostly traces a kpc-scale biconical outflow ionized by the AGN having velocities up to ∼200 km s<SUP>-1</SUP>. Hα emission traces instead star formation in a circumnuclear ring and along the bar, where we detect non-circular streaming gas motions. Soft X-rays are predominantly due to thermal emission from the star-forming regions, but we manage to isolate the AGN photoionized component which nicely matches the [O III] emission. The mass outflow rate of the extended ionized outflow is similar to that of the nuclear X-ray wind and then decreases with radius, implying that the outflow either slows down or that the AGN activity has recently increased. However, the hard X-ray emission from the circumnuclear ring suggests that star formation might in principle contribute to the outflow. The integrated mass outflow rate, kinetic energy rate, and outflow velocity are broadly consistent with the typical relations observed in more luminous AGN. Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under program ID 094.B-0321(A).
URI: http://hdl.handle.net/20.500.12386/29245
URL: http://arxiv.org/abs/1809.01206v1
https://www.aanda.org/articles/aa/full_html/2018/11/aa33668-18/aa33668-18.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201833668
Bibcode ADS: 2018A&A...619A..74V
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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