ReveaLLAGN 0: First Look at JWST MIRI data of Sombrero and NGC 1052

Author(s): Kameron Goold, Anil Seth, M. Molina, David Ohlson, Jessie C. Runnoe, Torsten Boeker, Timothy A. Davis, A. Dumont, Michael Eracleous, Juan Antonio Fernández-Ontiveros, Elena Gallo, Andy D. Goulding, Jenny E. Greene, Luis C. Ho, Sera B. Markoff, Nadine Neumayer, Richard M. Plotkin, Almudena Prieto, Shoita Satyapal, G. Van De Ven, Jonelle L. Walsh, Feng Yuan, Anja Feldmeier-Krause, K. Gültekin, Sebastian Hoenig, A. Kirkpatrick, Nora Lützgendorf, Amy E. Reines, J. Strader, J. R. Trump, K. T. Voggel
Abstract: We present the first results from the Revealing Low-Luminosity Active Galactic Nuclei (ReveaLLAGN) survey, a JWST survey of seven nearby LLAGN. We focus on two observations with the Mid-Infrared Instrument's (MIRI) Medium Resolution Spectrograph (MRS) of the nuclei of NGC 1052 and Sombrero (NGC 4594 / M104). We also compare these data to public JWST data of a higher-luminosity AGN, NGC 7319. JWST clearly resolves the AGN component even in Sombrero, the faintest target in our survey; the AGN components have very red spectra. We find that the emission-line widths in both NGC 1052 and Sombrero increase with increasing ionization potential, with FWHM > 1000 km/s for lines with ionization potential > 50 eV. These lines are also significantly blue-shifted in both LLAGN. The high ionization potential lines in NGC 7319 show neither broad widths or significant blue shifts. Many of the lower ionization potential emission lines in Sombrero show significant blue wings extending > 1000 km/s. These features and the emission-line maps in both galaxies are consistent with outflows along the jet direction. Sombrero has the lowest luminosity high-ionization potential lines ([Ne V] and [O IV]) ever measured in the mid-IR, but the relative strengths of these lines are consistent with higher luminosity AGN. On the other hand, the [Ne V] emission is much weaker relative to the [Ne III}] and [Ne II] lines of higher-luminosity AGN. These initial results show the great promise that JWST holds for identifying and studying the physical nature of LLAGN.
Organisation(s): Department of Astrophysics
External organisation(s): University of Utah, Vanderbilt University, European Space Agency (ESA), Baltimore, Cardiff University, Max-Planck-Institut für Astronomie, Pennsylvania State University, Istituto di Astrofisica e Planetologia Spaziali , Centro de Estudios de Física del Cosmos de Aragón (CEFCA), Princeton University, Peking University, University of Amsterdam (UvA), University of Nevada, Reno, University of Nevada-Las Vegas, University of La Laguna, Institute of Astrophysics of the Canary Islands, George Mason University, Texas A&M University, Chinese Academy of Sciences (CAS), University of Michigan, University of Southampton, University of Kansas, Montana State University, Bozeman, Michigan State University, University of Connecticut, Université de Strasbourg, Ludwig-Maximilians-Universität München
Journal: The Astrophysical Journal
No. of pages: 19
ISSN: 0004-637X
Publication date: 07-2023
Peer reviewed: Yes
Austrian Fields of Science 2012: 103003 Astronomy, 103004 Astrophysics
Keywords
Portal url: https://ucrisportal.univie.ac.at/en/publications/c118c914-67e3-48d8-9086-ed1374345871

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