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    An ALMA [C ii] Survey of 27 Quasars at z > 5.94

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    Decarli_2018_ApJ_854_97.pdf
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    Author
    Decarli, R. cc
    Walter, Fabian cc
    Venemans, B. P. cc
    Bañados, Eduardo cc
    Bertoldi, Frank cc
    Carilli, Chris L. cc
    Fan, Xiaohui cc
    Farina, E. P. cc
    Mazzucchelli, C. cc
    Riechers, Dominik A. cc
    Rix, Hans-Walter cc
    Strauss, Michael A. cc
    Wang, Ran
    Yang, Yujin cc
    Show allShow less
    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2018-02-15
    Keywords
    galaxies: high-redshift
    galaxies: ISM
    quasars: emission lines
    quasars: general
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    An ALMA [C ii] Survey of 27 Quasars at z > 5.94 2018, 854 (2):97 The Astrophysical Journal
    Journal
    The Astrophysical Journal
    Rights
    © 2018. 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 a survey of the [C II] 158 mu m line and underlying far-infrared (FIR) dust continuum emission in a sample of 27 greater than or similar to 6 quasars using the Atacama Large Millimeter Array (ALMA) at similar to 1 '' resolution. The [C II] line was significantly detected (at > 5-sigma) in 23 sources (85%). We find typical line luminosities of L-[C (II]) = 10(9-10) L-circle dot, and an average line width of similar to 385 km s(-1). The [C II]-to-far-infrared luminosity ratios ([C II]/FIR) in our sources span one order of magnitude, highlighting a variety of conditions in the star-forming medium. Four quasar host galaxies are clearly resolved in their [C II] emission on a few kpc scales. Basic estimates of the dynamical masses of the host galaxies give masses between 2 x 10(10) and 2 x 10(11) M-circle dot, i.e., more than an order of magnitude below what is expected from local scaling relations, given the available limits on the masses of the central black holes (> 3 x 10(8) M-circle dot, assuming Eddington-limited accretion). In stacked ALMA [C II] spectra of individual sources in our sample, we find no evidence of a deviation from a single Gaussian profile. The quasar luminosity does not strongly correlate with either the [C II] luminosity or equivalent width. This survey (with typical on-source integration times of 8 minutes) showcases the unparalleled sensitivity of ALMA at millimeter wavelengths, and offers a unique reference sample for the study of the first massive galaxies in the universe.
    ISSN
    1538-4357
    DOI
    10.3847/1538-4357/aaa5aa
    Version
    Final published version
    Sponsors
    DFG [1573]; ERC grant Cosmic_Dawn; National Science Foundation [AST-1614213]
    Additional Links
    http://stacks.iop.org/0004-637X/854/i=2/a=97?key=crossref.f5c0aa93f06d2e5277de3d42af478644
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-4357/aaa5aa
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    UA Faculty Publications

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