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.

Krogager, J.-K.

Vestergaard, Marianne

Møller, P.

Arabsalmani, M.
Geier, S.
Noterdaeme, P.
Ledoux, C.
Saturni, F. G.
Venemans, B. P.

Affiliation
Univ Arizona, Steward ObservIssue Date
2016-06-21
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IOP PUBLISHING LTDCitation
SERENDIPITOUS DISCOVERY OF A PROJECTED PAIR OF QSOs SEPARATED BY 4.5 arcsec ON THE SKY 2016, 152 (1):13 The Astronomical JournalJournal
The Astronomical JournalRights
© 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
1538-3881Version
Final published versionSponsors
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 UtahAdditional Links
http://stacks.iop.org/1538-3881/152/i=1/a=13?key=crossref.7ddc76a44352f94b18e9d1c64ba5fff3ae974a485f413a2113503eed53cd6c53
10.3847/0004-6256/152/1/13