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arXiv · 2408.06100

Blowing star formation away in AGN Hosts (BAH) -- I. Observation of Warm Molecular Outflows with JWST MIRI

J. H. Costa-Souza·Rogemar A. Riffel·Gabriel L. Souza-Oliveira·Nadia L. Zakamska·Marina Bianchin·Thaisa Storchi-Bergmann·Rogério Riffel
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Abstract

We use the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) medium-resolution spectrometer (MRS) observations of the radio loud AGN host UGC 8782 to map the warm molecular and ionized gas kinematics. The data reveal spatially resolved outflows in the inner 2 kpc, seen in low ionization (traced by the [Ar ii] 6.99um emission) and in warm molecular gas (traced by the H2 rotational transitions). We find a maximum mass-outflow rate of 4.90 (2.04) M/yr at ~900 pc from the nucleus for the warm outflow (198 K< T< 1000 K) and estimate and outflow rate of up to 1.22 (0.51) M/yr for the hotter gas phase (T > 1000 K). These outflows can clear the entire nuclear reservoir of warm molecular gas in about 1 Myr. The derived kinetic power of the molecular outflows lead to coupling efficiencies of 2-5 percent of the AGN luminosity, way above the minimum expected to the AGN feedback be effective quenching the star formation.

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J. H. Costa-Souza, Rogemar A. Riffel, Gabriel L. Souza-Oliveira, Nadia L. Zakamska, Marina Bianchin, Thaisa Storchi-Bergmann, Rogério Riffel. 2024-08-12. Blowing star formation away in AGN Hosts (BAH) -- I. Observation of Warm Molecular Outflows with JWST MIRI. https://arxiv.org/abs/2408.06100

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