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The SDSS-III BOSS quasar lens survey : discovery of 13 gravitationally lensed quasars

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The SDSS-III BOSS quasar lens survey : discovery of 13 gravitationally lensed quasars

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Título The SDSS-III BOSS quasar lens survey : discovery of 13 gravitationally lensed quasars
Autor More, Anupreeta
Oguri, Masamune
Kayo, Issha
Zinn, Joel C.
Strauss, Michael A.
Santiago, Basilio Xavier
Mosquera, Ana Maria
Inada, Naohisa
Kochanek, C.S.
Rusu, Cristian Eduard
Brownstein, Joel R.
Costa, Luiz N. da
Kneib, J.P.
Maia, Marcio Antonio Geimba
Quimby, Robert M.
Schneider, D.P.
Streblyanska, Alina
York, Donald G.
Abstract We report the discovery of 13 confirmed two-image quasar lenses from a systematic search for gravitationally lensed quasars in the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). We adopted a methodology similar to that used in the SDSS Quasar Lens Search (SQLS). In addition to the confirmed lenses, we report 11 quasar pairs with small angular separations ( 2 arcsec) confirmed from our spectroscopy, which are either projected pairs, physical binaries, or possibly quasar lens systems whose lens galaxies have not yet been detected. The newly discovered quasar lens system, SDSS J1452+4224 at zs ≈ 4.8 is one of the highest redshift multiply imaged quasars found to date. Furthermore, we have over 50 good lens candidates yet to be followed up. Owing to the heterogeneous selection of BOSS quasars, the lens sample presented here does not have a well-defined selection function.
Contido em Monthly notices of the Royal Astronomical Society. Oxford. Vol. 456, no. 2 (Feb. 2016), p. 1595-1606
Assunto Mapeamentos astronômicos
Quasars
[en] Gravitational lensing: strong
[en] Methods: statistical
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/141506
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