Uncovering the Active Galactic Nuclei in Low-Ionization Nuclear Emission-Line Regions with Spitzer
David Rupke, Sylvain Veilleux, DongChan Kim (Maryland), Eckhard Sturm,, Alessandra Contursi, Dieter Lutz (MPE), Hagai Netzer, Amiel Sternberg, Dan, Maoz (Tel Aviv)
TL;DR
This study uses Spitzer mid-infrared data to investigate the presence and properties of active galactic nuclei in LINERs, revealing dependencies on ionization state and infrared luminosity.
Contribution
It provides new insights into the prevalence and characteristics of AGN in LINERs through mid-infrared emission line analysis.
Findings
AGN are common in LINERs based on mid-infrared lines
Mid-infrared emission line properties depend on ionization state
Infrared luminosity influences emission line characteristics
Abstract
The impact of active galactic nuclei on low-ionization nuclear emission-line regions (LINERs) remains a vigorous field of study. We present preliminary results from a study of the mid-infrared atomic emission lines of LINERs with the Spitzer Space Telescope. We assess the ubiquity and properties of AGN in LINERs using this data. We discuss what powers the mid-infrared emission lines and conclude that the answer depends unsurprisingly on the emission line ionization state and, more interestingly, on the infrared luminosity.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Stellar, planetary, and galactic studies · Astrophysical Phenomena and Observations