1. Mapping Seyfert and LINER excitation modes in the inner kpc of NGC 3393
- Author
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Giuseppina Fabbiano, Junfeng Wang, Martin Elvis, Alessandro Paggi, W. Peter Maksym, Margarita Karovska, John C. Raymond, Thaisa Storchi-Bergmann, ITA, and USA
- Subjects
Seyfert [Galaxies] ,Active galactic nucleus ,active [Galaxies] ,Astrophysics::High Energy Astrophysical Phenomena ,galaxies: active ,Doubly ionized oxygen ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Bicone ,individual (NGC 3393) [Galaxies] ,Ionization ,galaxies: individual (NGC 3393) ,galaxies: Seyfert ,Astronomy and Astrophysics ,Space and Planetary Science ,0103 physical sciences ,Emission spectrum ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Mapeamentos astronômicos ,010308 nuclear & particles physics ,Spatially resolved ,Astrophysics - Astrophysics of Galaxies ,Galaxy ,Galaxias seyfert ,Astrophysics of Galaxies (astro-ph.GA) ,Galáxia NGC 3393 ,Astrophysics - High Energy Astrophysical Phenomena ,Excitation - Abstract
We have mapped the extended narrow line region (ENLR) of NGC 3393 on scales of $r\lesssim4^{\prime\prime}$ ($\sim1\,$kpc) from the nucleus using emission line images of H$\alpha\,\lambda6563$, [O III]$\lambda5007$, and [S II]$\lambda\lambda6717,6731$ taken with HST as part of the CHandra survey of Extended Emission line Regions in nearby Seyfert galaxies (CHEERS). By mapping these lines onto a spatially resolved Baldwin-Phillips-Terlevich (BPT) diagram, we investigate the impact of feedback from a Compton-thick AGN on its circumnuclear ISM. We find the expected Seyfert-like emission within the ionization bicone ($\lesssim3^{\prime\prime}$; 770 pc). We also find a new, figure 8 shaped LINER cocoon enveloping the bicone and defining a sharp ($\lesssim100\;$pc) transition between higher and lower ionization zones. These data illustrate the morphological dependence of ionization states of the ENLR relative to bicone and host gas geometries., Comment: Accepted by ApJ and published (2016, ApJ, 829, 46). Updated to reflect the accepted version
- Published
- 2016