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Ionized outflows in local luminous AGN: Density and outflow rate

Published online by Cambridge University Press:  29 March 2021

R. Davies Open the ORCID record for R. Davies [Opens in a new window] ,
D. Baron ,
T. Shimizu  and
H. Netzer
R. Davies
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, 85741, Garching, Germany
D. Baron
Affiliation:
School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
T. Shimizu
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, 85741, Garching, Germany
H. Netzer
Affiliation:
School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel
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Abstract

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We use the LLAMA survey to study the density and outflow rate of ionized gas in a complete volume limited sample of local (<40 Mpc) luminous (43.0 < log LAGN(erg/s) < 44.5) AGN selected by very hard 14-195 keV X-rays. The detailed data available for this survey enable us to measure the density of the outflowing ionized gas in the central 300 pc of these AGN using three different and independent methods (the standard [SII] doublet ratio; a method comparing [OII] and [SII] ratios that include auroral and transauroral lines; and a recently proposed method based on the ionization parameter). For each method there is, as expected, a modest spread of densities among the AGN in the sample. But remarkably, the median densities for each method differ hugely, by an order of magnitude from below 400 cm-3 to almost 5000 cm-3. We discuss how the derived densities can be reconciled, and what the impact is on the implied outflow rate.

Keywords

Galaxies: activeGalaxies: ISMGalaxies: nucleiGalaxies: Seyfert
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 226 - 231
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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