Feeding and Feedback in nearby AGN from Integral Field Spectroscopy - Astrophysics > Cosmology and Nongalactic AstrophysicsReport as inadecuate




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Abstract: I report results of recent integral field spectroscopy of the inner fewhundred parsecs pc around nearby Active Galactic Nuclei AGN at a samplingof a few pc, obtained with the Gemini Telescopes. In the lowest activity AGNs,it is possible to observe inflows in ionized gas along nuclear spirals andfilaments. In more luminous AGN inflows have been observed also in hotmolecular gas H 2 emission in the near-IR. In most cases the H 2 kinematicsis dominated by circular rotation in the plane around the nucleus, tracing theAGN feeding. The ionized gas, on the other hand, traces the AGN feedback. Itskinematics shows two components: 1 one originating in the plane, anddominated by circular rotation; 2 another outflowing along the Narrow-LineRegion NLR whose flux distribution and kinematics frequently correlate withstructures seen in radio maps. Mass outflow rates along the NLR range from10^-2 to 1 M sun yr^-1, corresponding to 10-100 times the accretion rate to theAGN, indicating that most of the NLR gas mass has been entrained from thegalaxy plane. The average kinetic power of the NLR outflows is ~10^-4 times thebolometric luminosity.



Author: Thaisa Storchi-Bergmann

Source: https://arxiv.org/







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