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    SERENDIPITOUS DISCOVERY OF A PROJECTED PAIR OF QSOs SEPARATED BY 4.5 arcsec ON THE SKY

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    Author
    Heintz, K. E.
    Fynbo, J. P. U. cc
    Krogager, J.-K. cc
    Vestergaard, Marianne cc
    Møller, P. cc
    Arabsalmani, M.
    Geier, S.
    Noterdaeme, P.
    Ledoux, C.
    Saturni, F. G.
    Venemans, B. P. cc
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    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2016-06-21
    Keywords
    quasars
    general
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    SERENDIPITOUS DISCOVERY OF A PROJECTED PAIR OF QSOs SEPARATED BY 4.5 arcsec ON THE SKY 2016, 152 (1):13 The Astronomical Journal
    Journal
    The Astronomical Journal
    Rights
    © 2016. 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 the serendipitous discovery of a projected pair of quasi-stellar objects (QSOs) with an angular separation of Delta theta = 4.50 arcsec. The redshifts of the two QSOs are widely different: one, our program target, is a QSO with a spectrum consistent with being a narrow line Seyfert 1 active galactic nucleus at z = 2.05. For this target we detect Ly alpha, C IV, and C III]. The other QSO, which by chance was included on the spectroscopic slit, is a Type 1 QSO at a redshift of z = 1.68, for which we detect C IV, CIII], and Mg II. We compare this system to previously detected projected QSO pairs and find that only about a dozen previously known pairs have smaller angular separation.
    ISSN
    1538-3881
    DOI
    10.3847/0004-6256/152/1/13
    Version
    Final published version
    Sponsors
    European Research Council under European Union/ERC [EGGS-278202]; ERC; Danish Council for Independent Research [DFF 4002-00275]; Alfred P. Sloan Foundation; U.S. Department of Energy Office of Science; Center for High Performance Computing at the University of Utah
    Additional Links
    http://stacks.iop.org/1538-3881/152/i=1/a=13?key=crossref.7ddc76a44352f94b18e9d1c64ba5fff3
    ae974a485f413a2113503eed53cd6c53
    10.3847/0004-6256/152/1/13
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    UA Faculty Publications

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