The Astrophysical Journal Letters (Jan 2023)
GOALS-JWST: Mid-infrared Spectroscopy of the Nucleus of NGC 7469
- L. Armus,
- T. Lai,
- V. U,
- K. L. Larson,
- T. Diaz-Santos,
- A. S. Evans,
- M. A. Malkan,
- J. Rich,
- A. M. Medling,
- D. R. Law,
- H. Inami,
- F. Muller-Sanchez,
- V. Charmandaris,
- P. van der Werf,
- S. Stierwalt,
- S. Linden,
- G. C. Privon,
- L. Barcos-Muñoz,
- C. Hayward,
- Y. Song,
- P. Appleton,
- S. Aalto,
- T. Bohn,
- T. Böker,
- M. J. I. Brown,
- L. Finnerty,
- J. Howell,
- K. Iwasawa,
- F. Kemper,
- J. Marshall,
- J. M. Mazzarella,
- J. McKinney,
- E. J. Murphy,
- D. Sanders,
- J. Surace
Affiliations
- L. Armus
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- T. Lai
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- V. U
- ORCiD
- Department of Physics and Astronomy, 4129 Frederick Reines Hall, University of California , Irvine, CA 92697, USA
- K. L. Larson
- ORCiD
- AURA for the European Space Agency (ESA), Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- T. Diaz-Santos
- ORCiD
- Institute of Astrophysics , Foundation for Research and Technology-Hellas (FORTH), Heraklion, 70013, Greece; School of Sciences, European University Cyprus , Diogenes Street, Engomi, 1516 Nicosia, Cyprus
- A. S. Evans
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA; Department of Astronomy, University of Virginia , 530 McCormick Road, Charlottesville, VA 22903, USA
- M. A. Malkan
- ORCiD
- Department of Physics & Astronomy, 430 Portola Plaza, University of California , Los Angeles, CA 90095, USA
- J. Rich
- ORCiD
- The Observatories of the Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91101, USA
- A. M. Medling
- ORCiD
- Department of Physics & Astronomy and Ritter Astrophysical Research Center, University of Toledo , Toledo, OH 43606, USA; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australia
- D. R. Law
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- H. Inami
- ORCiD
- Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- F. Muller-Sanchez
- ORCiD
- Department of Physics and Materials Science, The University of Memphis , 3720 Alumni Avenue, Memphis, TN 38152, USA
- V. Charmandaris
- ORCiD
- Institute of Astrophysics , Foundation for Research and Technology-Hellas (FORTH), Heraklion, 70013, Greece; School of Sciences, European University Cyprus , Diogenes Street, Engomi, 1516 Nicosia, Cyprus; Department of Physics, University of Crete , Heraklion, 71003, Greece
- P. van der Werf
- ORCiD
- Leiden Observatory, Leiden University , PO Box 9513, 2300 RA Leiden, The Netherlands
- S. Stierwalt
- ORCiD
- Physics Department, Occidental College , 1600 Campus Road, Los Angeles, CA 90041, USA
- S. Linden
- ORCiD
- Department of Astronomy, University of Massachusetts at Amherst , Amherst, MA 01003, USA
- G. C. Privon
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA; Department of Astronomy, University of Florida , PO Box 112055, Gainesville, FL 32611, USA
- L. Barcos-Muñoz
- ORCiD
- Department of Astronomy, University of Virginia , 530 McCormick Road, Charlottesville, VA 22903, USA
- C. Hayward
- ORCiD
- Center for Computational Astrophysics , Flatiron Institute, 162 Fifth Avenue, New York, NY 10010, USA
- Y. Song
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA; Department of Astronomy, University of Virginia , 530 McCormick Road, Charlottesville, VA 22903, USA
- P. Appleton
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- S. Aalto
- ORCiD
- Department of Space, Earth and Environment, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
- T. Bohn
- ORCiD
- Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- T. Böker
- ORCiD
- European Space Agency, Space Telescope Science Institute , Baltimore, MD 21218, USA
- M. J. I. Brown
- ORCiD
- School of Physics and Astronomy, Monash University , Clayton, VIC 3800, Australia
- L. Finnerty
- ORCiD
- Department of Physics & Astronomy, 430 Portola Plaza, University of California , Los Angeles, CA 90095, USA
- J. Howell
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- K. Iwasawa
- ORCiD
- Institut de Ciències del Cosmos (ICCUB) , Universitat de Barcelona (IEEC-UB), Martí i Franquès, 1, E-08028 Barcelona, Spain; ICREA, Pg. Lluís Companys 23 , E-08010 Barcelona, Spain
- F. Kemper
- ORCiD
- Institut de Ciencies de l’Espai (ICE, CSIC) , Can Magrans, s/n, E-08193 Bellaterra, Barcelona, Spain; ICREA, Pg. Lluís Companys 23 , Barcelona, Spain; Institut d’Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona, Spain
- J. Marshall
- ORCiD
- Glendale Community College , 1500 North Verdugo Road, Glendale, CA 91208, USA
- J. M. Mazzarella
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- J. McKinney
- ORCiD
- Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
- E. J. Murphy
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
- D. Sanders
- ORCiD
- Institute for Astronomy, University of Hawaii , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- J. Surace
- ORCiD
- IPAC, California Institute of Technology , 1200 East California Boulevard, Pasadena, CA 91125, USA ; [email protected]
- DOI
- https://doi.org/10.3847/2041-8213/acac66
- Journal volume & issue
-
Vol. 942,
no. 2
p. L37
Abstract
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 H _2 emission lines are detected with intrinsic widths ranging from FWHM ∼125 to 330 km s ^−1 . We estimate a total mass of warm H _2 gas of ∼1.2 × 10 ^7 M _⊙ in the central 100 pc. The PAH features are extremely weak in the nuclear spectrum, but a 6.2 μ m PAH feature with an equivalent width of ∼0.07 μ m 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.
Keywords
