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    The Blueshift of the C iv Broad Emission Line in QSOs

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    Ge_2019_AJ_157_148.pdf
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    Author
    Ge, Xue
    Zhao, Bi-Xuan
    Bian, Wei-Hao
    Frederick, Green Richard
    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2019-04
    Keywords
    black hole physics
    galaxies: active
    quasars: emission lines
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    Xue Ge et al 2019 AJ 157 148
    Journal
    ASTRONOMICAL JOURNAL
    Rights
    © 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
    For the sample from Ge et al. of 87 low-z Palomar-Green quasi-stellar objects (QSOs) and 130 high-z QSOs (0 < z < 5) with H beta-based single-epoch supermassive black hole masses, we perform a uniform decomposition of the C IV lambda 1549 broad-line profile. Based on the rest frame defined by the [O III] lambda 5007 narrow emission line, a medium-strong positive correlation is found between the C IV blueshift and the luminosity at 5100 angstrom or the Eddington ratio L-Bol/L-Edd. A medium-strong negative relationship is found between the C IV blueshift and C IV equivalent width. These results support the postulation where the radiation pressure may be the driver of C IV blueshift. There is a medium-strong correlation between the mass ratio of C IV-based to H beta-based M-BH and the C IV blueshift, which indicates that the bias for C IV-based M-BH is affected by the C IV profile.
    ISSN
    1538-3881
    DOI
    10.3847/1538-3881/ab0956
    Version
    Final published version
    Sponsors
    National Key Research and Development Program of China [2017YFA0402703]; National Science Foundations of China [11373024, 11233003, 11873032]
    Additional Links
    http://stacks.iop.org/1538-3881/157/i=4/a=148?key=crossref.512675ac29dad96584930f39d4243954
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-3881/ab0956
    Scopus Count
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    UA Faculty Publications

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