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GOALS-JWST: Mid-infrared Spectroscopy of the Nucleus of NGC 7469

Armus, Lee (author)
California Institute of Technology (Caltech)
Lai, Thomas (author)
California Institute of Technology (Caltech)
Vivian, U. (author)
University of California at Irvine (UCI)
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Larson, K. (author)
Space Telescope Science Institute (STScI)
Diaz-Santos, T. (author)
Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),European University Cyprus
Evans, Aaron S. (author)
University of Virginia,National Radio Astronomy Observatory
Malkan, M. A. (author)
University of California
Rich, Jeffrey A. (author)
Carnegie Observatories
Medling, Anne M. (author)
University of Toledo
Law, David R. (author)
Space Telescope Science Institute (STScI)
Inami, H. (author)
Hiroshima University
Muller-Sanchez, Francisco (author)
Charmandaris, V. (author)
Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete,European University Cyprus
van der Werf, P. V.D. (author)
Universiteit Leiden (UL),Leiden University (UL)
Stierwalt, S. (author)
Occidental College
Linden, S. T. (author)
University of Massachusetts
Privon, G. (author)
University of Florida,National Radio Astronomy Observatory
Barcos-Munoz, Loreto (author)
University of Virginia
Hayward, Christopher C. (author)
Flatiron Institute
Song, Y. (author)
University of Virginia,National Radio Astronomy Observatory
Appleton, P. (author)
California Institute of Technology (Caltech)
Aalto, Susanne, 1964 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Bohn, Thomas (author)
Hiroshima University
Boker, T. (author)
European Space Agency (ESA)
Brown, Michael J.I. (author)
Monash University
Finnerty, Luke (author)
University of California
Howell, Justin (author)
California Institute of Technology (Caltech)
Iwasawa, K. (author)
Institucio Catalana de Recerca i Estudis Avancats (ICREA),Catalan Institution for Research and Advanced Studies (ICREA),Universitat de Barcelona,University of Barcelona
Kemper, F. (author)
Institucio Catalana de Recerca i Estudis Avancats (ICREA),Catalan Institution for Research and Advanced Studies (ICREA),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC
Marshall, J. P. (author)
Mazzarella, J. (author)
California Institute of Technology (Caltech)
McKinney, Jed (author)
University of Massachusetts
Murphy, Eric J. (author)
National Radio Astronomy Observatory
Sanders, David (author)
University of Hawaii
Surace, J. A. (author)
California Institute of Technology (Caltech)
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 (creator_code:org_t)
2023-01-13
2023
English.
In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8213 .- 2041-8205. ; 942:2
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present mid-infrared spectroscopic observations of the nucleus of the nearby Seyfert galaxy NGC 7469 taken with the MIRI instrument on the James Webb Space Telescope (JWST) as part of Directors Discretionary Time Early Release Science program 1328. The high-resolution nuclear spectrum contains 19 emission lines covering a wide range of ionization. The high-ionization lines show broad, blueshifted emission reaching velocities up to 1700 km s−1 and FWHM ranging from ∼500 to 1100 km s−1. The width of the broad emission and the broad-to-narrow line flux ratios correlate with ionization potential. The results suggest a decelerating, stratified, AGN-driven outflow emerging from the nucleus. The estimated mass outflow rate is 1-2 orders of magnitude larger than the current black hole accretion rate needed to power the AGN. Eight pure rotational H2 emission lines are detected with intrinsic widths ranging from FWHM ∼125 to 330 km s−1. We estimate a total mass of warm H2 gas of ∼1.2 × 107 M ⊙ in the central 100 pc. The PAH features are extremely weak in the nuclear spectrum, but a 6.2 μm PAH feature with an equivalent width of ∼0.07 μm and a flux of 2.7 × 10−17 W m−2 is detected. The spectrum is steeply rising in the mid-infrared, with a silicate strength of ∼0.02, significantly smaller than seen in most PG QSOs but comparable to other Seyfert 1s. These early MIRI mid-infrared IFU data highlight the power of JWST to probe the multiphase interstellar media surrounding actively accreting supermassive black holes.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

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