The Close AGN Reference Survey (CARS)

Abstract

Context. Galaxy-wide outflows driven by star formation and/or an active galactic nucleus (AGN) are thought to play a crucial rule in the evolution of galaxies and the metal enrichment of the inter-galactic medium. Direct measurements of these processes are still scarce and new observations are needed to reveal the nature of outflows in the majority of the galaxy population. Aims. We combine extensive, spatially-resolved, multi-wavelength observations, taken as part of the Close AGN Reference Survey (CARS), for the edge-on disc galaxy HE 1353−1917 in order to characterise the impact of the AGN on its host galaxy via outflows and radiation. Methods. Multi-color broad-band photometry was combined with spatially-resolved optical, near-infrared (NIR) and sub-mm and radio observations taken with the Multi-Unit Spectroscopy Explorer (MUSE), the Near-infrared Integral Field Spectrometer (NIFS), the Atacama Large Millimeter Array (ALMA), and the Karl G. Jansky Very Large Array (VLA) to map the physical properties and kinematics of the multi-phase interstellar medium. Results. We detect a biconical extended narrow-line region ionised by the luminous AGN orientated nearly parallel to the galaxy disc, extending out to at least 25 kpc. The extra-planar gas originates from galactic fountains initiated by star formation processes in the disc, rather than an AGN outflow, as shown by the kinematics and the metallicity of the gas. Nevertheless, a fast, multi-phase, AGN-driven outflow with speeds up to 1000 km s−1 is detected close to the nucleus at 1 kpc distance. A radio jet, in connection with the AGN radiation field, is likely responsible for driving the outflow as confirmed by the energetics and the spatial alignment of the jet and multi-phase outflow. Evidence for negative AGN feedback suppressing the star formation rate (SFR) is mild and restricted to the central kpc. But while any SFR suppression must have happened recently, the outflow has the potential to greatly impact the future evolution of the galaxy disc due to its geometrical orientation. Conclusions.. Our observations reveal that low-power radio jets can play a major role in driving fast, multi-phase, galaxy-scale outflows even in radio-quiet AGN. Since the outflow energetics for HE 1353−1917 are consistent with literature, scaling relation of AGN-driven outflows the contribution of radio jets as the driving mechanisms still needs to be systematically explored.

The Close AGN Reference Survey (CARS)

“…2. In addition, a massive multiphase outflow on kiloparsec scales with a mass outflow rate ofṀ out ∼10-100 M yr −1 is detected in this galaxy, as discussed in detail by Husemann et al (2019), while less prominent outflows are detected in the other four galaxies (Singha et al, in prep.). The global SFR of ∼2 M yr −1 implies an integrated mass-loading factor of ∼10 or more that has a similar scale as the observed [C ii] excess.…”

“…X-ray dominated regions (XDRs) produced by the hard X-ray photons from an AGN may contribute and even dominate the PDR [C ii] emission. From the scaling relation Stacey et al (2010), we estimate an XDR contribution of only 10% given an X-ray luminosity of L 2−10 keV = 1.69 × 10 43 erg s −1 (Husemann et al 2019).…”

“…As a first step in the post-processing, we subtracted the bright point-like AGN emission from the reconstructed datacube using QDeblend 3D , as described in Husemann et al (2013Husemann et al ( , 2014Husemann et al ( , 2019. Afterward we modeled the stellar continuum and ISM emission lines in the AGN-subtracted datacube with PyParadise (see Husemann et al 2016;Weaver et al 2018, for details).…”

The AMUSING++ Nearby Galaxy Compilation. I. Full Sample Characterization and Galactic-scale Outflow Selection

“…The [O III] fillaments also shows a spatial decoupling with the continuum emission. An extensive analysis with MUSE data of these galaxies has been performed in Powell et al (2018) and (Husemann et al 2019) respectively.…”

“…Before any detailed study of the physical conditions of outflows, it is necessary to have large samples of bonafide outflows across a broad range of galaxy properties. The study of outflows has been addressed using different observational techniques and at different wavelength ranges, from X-ray to radio wavelengths (e.g., Husemann et al 2019).…”