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AGN SIG Seminar

Active Galactic Nuclei Science Interest Group

DATE

Mar 14, 2023

TIME

12:00 pm EST

COMMUNITY

AGN SIG

TYPE

Seminar

ReveaLLAGN: A first look at low-luminosity AGN with JWST

Anil Seth and Kameron Goold

Most galaxies in the local Universe accrete at rates far below their Eddington limit. JWST is the most sensitive telescope for detecting these low-luminosity AGN, but identifying them requires quantifying their unique signatures. JWST can also probe the changes in AGN structure that occur at low luminosities through both the IR continuum as well as coronal lines that are formed from the UV ionizing spectrum. ReveaLLAGN is a a study of 7 nearby low-luminosity AGN with IFUs on NIRSpec and MIRI; these objects will serve as templates for more distant objects, and provide a first look at the SED and emission line properties of low-luminosity AGN in the mid-IR. We present initial results from Sombrero and NGC1052 in this talk, contrasting these objects with Spitzer observations of higher luminosity AGN and the JWST observation of NGC7319.

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An illustration of Sun-like star HD 181327 and its surrounding debris disk. The star is at top right. It is surrounded by a far larger debris disk that forms an incomplete ellpitical path and is cut off at right. There’s a huge cavity between the star and the disk. The debris disk is shown in shades of light gray. Toward the top and left, there are finer, more discrete points in a range of sizes. The disk appears hazier and smokier at the bottom. The star is bright white at center, with a hazy blue region around it. The background of space is black. The label Artist's Concept appears at lower left.