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    The z = 7.54 Quasar ULAS J1342+0928 Is Hosted by a Galaxy Merger

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    Bañados_2019_ApJL_881_L23.pdf
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    Author
    Bañados, Eduardo cc
    Novak, Mladen
    Neeleman, Marcel
    Walter, Fabian cc
    Decarli, Roberto
    Venemans, Bram P.
    Mazzucchelli, Chiara
    Carilli, Chris
    Wang, Feige cc
    Fan, Xiaohui
    Farina, Emanuele P.
    Rix, Hans-Walter
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    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2019-08-12
    Keywords
    cosmology: observations
    early universe
    galaxies: ISM
    galaxies: kinematics and dynamics
    quasars: individual (ULAS J134208.10+092838.35)
    
    Metadata
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    Publisher
    IOP PUBLISHING LTD
    Citation
    Eduardo Bañados et al 2019 ApJL 881 L23
    Journal
    ASTROPHYSICAL JOURNAL LETTERS
    Rights
    Copyright © 2019. The American Astronomical Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We present ALMA 0.'' 128 x 0.'' 20 (1.4 kpc x 1.0 kpc) resolution observations of the [C II] 158 mu m line and underlying dust continuum in the host galaxy of the most distant quasar currently known, ULAS J1342+0928 at z = 7.5413. Both the [C II] and continuum are detected and spatially resolved. The [C II] line is similar to 1.5 times more extended than the continuum emission, showing an elongated and complex structure of approximately 3.2 kpc x 6.4 kpc. Two separate peaks are clearly seen (greater than or similar to 6 sigma each) in three 100 km s(-1) width [C II] channel maps. The velocity field of the [C II] gas does not show evidence of a coherent rotation field but rather chaotic motion reminiscent of an ongoing merger.
    ISSN
    2041-8205
    DOI
    10.3847/2041-8213/ab3659
    Version
    Final published version
    Sponsors
    ERC [740246]
    ae974a485f413a2113503eed53cd6c53
    10.3847/2041-8213/ab3659
    Scopus Count
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    UA Faculty Publications

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