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GOALS-JWST: Unveiling Dusty Compact Sources in the Merging Galaxy IIZw096

Inami, H. (author)
Hiroshima University
Surace, J. A. (author)
California Institute of Technology (Caltech)
Armus, Lee (author)
California Institute of Technology (Caltech)
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Evans, Aaron S. (author)
University of Virginia,National Radio Astronomy Observatory
Larson, K. (author)
Space Telescope Science Institute (STScI)
Barcos-Munoz, Loreto (author)
University of Virginia,National Radio Astronomy Observatory
Stierwalt, S. (author)
Occidental College
Mazzarella, J. (author)
California Institute of Technology (Caltech)
Privon, G. (author)
National Radio Astronomy Observatory,University of Florida
Song, Y. (author)
University of Virginia,National Radio Astronomy Observatory
Linden, S. T. (author)
University of Massachusetts
Hayward, Christopher C. (author)
Flatiron Institute
Boker, T. (author)
European Space Agency (ESA)
Vivian, U. (author)
University of California at Irvine (UCI)
Bohn, Thomas (author)
Hiroshima University
Charmandaris, V. (author)
European University Cyprus,Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Panepistimio Kritis,University of Crete
Diaz-Santos, T. (author)
European University Cyprus,Idryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH)
Howell, Justin (author)
California Institute of Technology (Caltech)
Lai, Thomas (author)
California Institute of Technology (Caltech)
Medling, Anne M. (author)
University of Toledo
Rich, Jeff (author)
Carnegie Observatories
Aalto, Susanne, 1964 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Appleton, P. (author)
California Institute of Technology (Caltech)
Brown, Michael J.I. (author)
Monash University
Hoshioka, Shunshi (author)
Hiroshima University
Iwasawa, K. (author)
Universitat de Barcelona,University of Barcelona,Institucio Catalana de Recerca i Estudis Avancats (ICREA),Catalan Institution for Research and Advanced Studies (ICREA)
Kemper, F. (author)
Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC,Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institucio Catalana de Recerca i Estudis Avancats (ICREA),Catalan Institution for Research and Advanced Studies (ICREA)
Law, David (author)
Space Telescope Science Institute (STScI)
Malkan, M. A. (author)
University of California
Marshall, Jason (author)
Murphy, E. J. (author)
National Radio Astronomy Observatory
Sanders, D. B. (author)
University of Hawaii
van der Werf, P. (author)
Universiteit Leiden (UL),Leiden University (UL)
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 (creator_code:org_t)
2022-11-15
2022
English.
In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8213 .- 2041-8205. ; 940:1
Related links:
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https://doi.org/10.3...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We have used the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST) to obtain the first spatially resolved, mid-infrared images of IIZw096, a merging luminous infrared galaxy (LIRG) at z = 0.036. Previous observations with the Spitzer Space Telescope suggested that the vast majority of the total IR luminosity (L IR) of the system originated from a small region outside of the two merging nuclei. New observations with JWST/MIRI now allow an accurate measurement of the location and luminosity density of the source that is responsible for the bulk of the IR emission. We estimate that 40%-70% of the IR bolometric luminosity, or 3-5 × 1011 L ⊙, arises from a source no larger than 175 pc in radius, suggesting a luminosity density of at least 3-5 × 1012 L ⊙ kpc−2. In addition, we detect 11 other star-forming sources, five of which were previously unknown. The MIRI F1500W/F560W colors of most of these sources, including the source responsible for the bulk of the far-IR emission, are much redder than the nuclei of local LIRGs. These observations reveal the power of JWST to disentangle the complex regions at the hearts of merging, dusty galaxies.

Subject headings

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)
NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

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