Capturing dual AGN activity and kiloparsec-scale outflows in IRAS 20210+1121

Abstract

The most accepted scenario for the evolution of massive galaxies across cosmic time predicts a regulation based on the interplay between AGN feedback, which injects large amounts of energy in the host environment, and galaxy mergers, being able to trigger massive star formation events and accretion onto the supermassive black holes. Interacting systems hosting AGN are useful laboratories to get key insights into both phenomena. In this context, we present the analysis of the optical spectral properties of IRAS 20210+1121 (I20210), a merging system at $z=0.056$. According to X-ray data, this object comprises two interacting galaxies, each hosting an obscured AGN. The optical spectra confirm the presence of AGN features in both galaxies. In particular, we are able to provide a Seyfert classification for I20210 North. The spectrum of I20120 South shows broad blueshifted components associated with the most intense emission lines that indicate the presence of an ionized outflow, for which we derive a maximum velocity of $\sim$2000 km s${}^{-1}$, an extension of $\sim$2 kpc and a mass rate of $\sim$0.6 M${}_{\odot }$ yr${}^{-1}$. We also report the existence of an ionized nebular component with $v\sim 1000$ km s${}^{-1}$ at $\sim$6.5 kpc Southwards of I20210 South, that can be interpreted as disrupted gas ejected from the host galaxy by the action of the outflow. I20120 therefore exhibits a double obscured AGN, with one of them showing evidence of ongoing events for AGN-powered outflows. Future spatially-resolved spectroscopy will allow to accurately map on the gas kinematics in this AGN pair and evaluate the impact of the outflow on both the interstellar medium and galaxy environment.

16 pages, 9 figures, 3 tables. Accepted for publication in A&A

References in corpus (22)

• The Host Galaxies and Classification of Active Galactic Nuclei
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• Dust covering factor, silicate emission and star formation in luminous QSOs
• High resolution mid-infrared spectroscopy of ultraluminous infrared galaxies
• Star formation in a galactic outflow
• Blowin' in the wind: both `negative' and `positive' feedback in an obscured high-z Quasar
• Ionized gas outflows and global kinematics of low-z luminous star forming galaxies
• The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
• A definitive merger-AGN connection at z~0 with CFIS: mergers have an excess of AGN and AGN hosts are more frequently disturbed
• X-shooter reveals powerful outflows in z~1.5 X-ray selected obscured quasi stellar objects
• Stellar kinematics across the Hubble sequence in the CALIFA survey: General properties and aperture corrections
• Ionized outflows in local luminous AGN: what are the real densities and outflow rates?
• Revisiting the Integrated Star Formation Law. II. Starbursts and the Combined Global Schmidt Law
• A New Catalogue of Type 1 AGN and its Implication on the AGN Unified Model
• Galaxy-wide outflows in z$\sim$1.5 luminous obscured QSOs revealed through NIR slit-resolved spectroscopy
• Quantifying the AGN-driven outflows in ULIRGs (QUADROS) I: VLT/Xshooter observations of 9 nearby objects
• MUSE view of Arp220: Kpc-scale multi-phase outflow and evidence for positive feedback
• Black hole mass estimation for Active Galactic Nuclei from a new angle
• An infrared view of AGN feedback in a type-2 quasar: the case of the Teacup galaxy
• Orientation effects on spectral emission features of quasars
• Physics of ULIRGs with MUSE and ALMA: The PUMA project I. Properties of the survey and first MUSE data results