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

RA Riffel, T Storchi-Bergmann, R Riffel…�- Monthly Notices of�…, 2023 - academic.oup.com
Monthly Notices of the Royal Astronomical Society, 2023academic.oup.com
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 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. 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�…
Abstract
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 Hm 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 . 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 () and kinetic power () 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 and the estimated momentum fluxes of the outflows suggest they are produced by radiation-pressure in low-density environment, with possible contribution from shocks.
Oxford University Press