The AGNIFS survey: spatially resolved observations of hot molecular and ionized outflows in nearby active galaxies

Riffel, R. A.; Storchi-Bergmann, T.; Riffel, R.; Bianchin, M.; Zakamska, N. L.; Ruschel-Dutra, D.; Bentz, M. C.; Burtscher, L.; Crenshaw, D. M.; Dahmer-Hahn, L. G.; Dametto, N. Z.; Davies, R. I.; Diniz, M. R.; Fischer, T. C.; Harrison, C. M.; Mainieri, V.; Revalski, M.; Rodriguez-Ardila, A.; Rosario, D. J.; Schönell, A. J.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society

Advertised on:
Number of authors
IAC number of authors
Refereed citations
We present the hot molecular and warm ionized gas kinematics for 33 nearby (0.001 ≲ z ≲ 0.056) X-ray selected active galaxies using the H$_2\, 2.1218\, \mu$m and Br γ emission lines observed in the K band with the Gemini near-infrared integral field spectrograph. The observations cover the inner 0.04-2 kpc of each active galactic nucleus at spatial resolutions of 4-250 pc with a velocity resolution of σinst ≈ 20 ${\rm km\, s^{-1}}$. We find that 31 objects (94 per cent) present a kinematically disturbed region (KDR) seen in ionized gas, while such regions are observed in hot molecular gas for 25 galaxies (76 per cent). We interpret the KDR as being due to outflows with masses of 102-107 and 100-104 M⊙ for the ionized and hot molecular gas, respectively. The ranges of mass-outflow rates ($\dot{M}_{\rm out}$) and kinetic power ($\dot{E}_{\rm K}$) of the outflows are 10-3-101 M⊙ yr-1 and ~1037-1043 erg s-1 for the ionized gas outflows, and 10-5-10-2 M⊙ yr-1 and 1035-1039 erg s-1 for the hot molecular gas outflows. The median coupling efficiency in our sample is $\dot{E}_{\mathrm{K}}/L_{\rm bol}\approx 1.8\times 10^{-3}$ and the estimated momentum fluxes of the outflows suggest they are produced by radiation-pressure in low-density environment, with possible contribution from shocks.
Related projects
Supermassive black holes modify the distribution of molecular gas in the central regions of galaxies. Credit: HST and C. Ramos Almeida.
Nuclear Activity in Galaxies: a 3D Perspective from the Nucleus to the Outskirts
This project consists of two main research lines. First, the study of quasar-driven outflows in luminous and nearby obscured active galactic nuclei (AGN) and the impact that they have on their massive host galaxies (AGN feedback). To do so, we have obtained Gran Telescopio CANARIAS (GTC) infrared and optical observations with the instruments
Ramos Almeida