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| Título: | GOALS-JWST: Resolving the circumnuclear gas dynamics in NGC 7469 in the mid-infrared |
Autor: | U, Vivian; Díaz-Santos, T. ; Barcos-Muñoz, Loreto; Charmandaris, Vassilis; Iwasawa, Kazushi; Kemper, Francisca CSIC ORCID; Mazzarella, Joseph M.; Müller-Sánchez, Francisco | Fecha de publicación: | 2022 | Editor: | IOP Publishing | Citación: | Astrophysical Journal Letters 940(1): L5 (2022) | Resumen: | The nearby, luminous infrared galaxy NGC 7469 hosts a Seyfert nucleus with a circumnuclear star-forming ring and is thus the ideal local laboratory for investigating the starburst–AGN (active galactic nucleus) connection in detail. We present integral-field observations of the central 1.3 kpc region in NGC 7469 obtained with the JWST Mid-InfraRed Instrument. Molecular and ionized gas distributions and kinematics at a resolution of ∼100 pc over the 4.9–7.6 μm region are examined to study the gas dynamics influenced by the central AGN. The low-ionization [Fe ii] λ5.34 μm and [Ar ii] λ6.99 μm lines are bright on the nucleus and in the starburst ring, as opposed to H2 S(5) λ6.91 μm, which is strongly peaked at the center and surrounding ISM. The high-ionization [Mg v] line is resolved and shows a broad, blueshifted component associated with the outflow. It has a nearly face-on geometry that is strongly peaked on the nucleus, where it reaches a maximum velocity of −650 km s−1, and extends about 400 pc to the east. Regions of enhanced velocity dispersion in H2 and [Fe ii] ∼ 180 pc from the AGN that also show high L(H2)/L(PAH) and L([Fe ii])/L(Pfα) ratios to the W and N of the nucleus pinpoint regions where the ionized outflow is depositing energy, via shocks, into the dense interstellar medium between the nucleus and the starburst ring. These resolved mid-infrared observations of the nuclear gas dynamics demonstrate the power of JWST and its high-sensitivity integral-field spectroscopic capability to resolve feedback processes around supermassive black holes in the dusty cores of nearby luminous infrared galaxies. | Descripción: | Vivian U et al. | Versión del editor: | https://doi.org/10.3847/2041-8213/ac961c | URI: | http://hdl.handle.net/10261/295407 | DOI: | 10.3847/2041-8213/ac961c | E-ISSN: | 2041-8213 |
| Aparece en las colecciones: | (ICE) Artículos |
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| goalsinfrared.pdf | 1,33 MB | Adobe PDF |  Visualizar/Abrir |
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