Discovery of three strongly lensed quasars in the Sloan Digital Sky Survey

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dc.contributor.authorWilliams P.R.
dc.contributor.authorAgnello A.
dc.contributor.authorTreu T.
dc.contributor.authorApostolovski Y.
dc.contributor.authorChen G.C.
dc.contributor.authorFassnacht C.D.
dc.contributor.authorHsueh J.W.
dc.contributor.authorLemaux B.C.
dc.contributor.authorMotta V.
dc.contributor.authorOldham L.
dc.contributor.authorRojas K.
dc.contributor.authorRusu C.E.
dc.contributor.authorShajib A.J.
dc.contributor.authorWang X.
dc.contributor.authorAbramson L.E.
dc.date.accessioned2022-08-01T21:00:39Z
dc.date.available2022-08-01T21:00:39Z
dc.date.issued2018-06
dc.descriptionIndexación Scopuses
dc.description.abstractWe present the discovery of three quasar lenses in the Sloan Digital Sky Survey, selected using two novel photometry-based selection techniques. The J0941+0518 system, with two point sources separated by 5.46 arcsec on either side of a galaxy, has source and lens redshifts 1.54 and 0.343. Images of J2257+2349 show two point sources separated by 1.67 arcsec on either side of an E/S0 galaxy. The extracted spectra show two images of the same quasar at zs = 2.10. SDSS J1640+1045 has two quasar spectra at zs = 1.70 and fits to the SDSS and Pan-STARRS images confirm the presence of a galaxy between the two point sources. We observed 56 photometrically selected lens candidates in this follow-up campaign, confirming three new lenses, re-discovering one known lens, and ruling out 36 candidates, with 16 still inconclusive. This initial campaign demonstrates the power of purely photometric selection techniques in finding lensed quasars. © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnrasl/article/477/1/L70/4935196
dc.identifier.citationMonthly Notices of the Royal Astronomical Society: Letters Volume 477, Issue 1, Pages L70 - L741 June 2018es
dc.identifier.doi10.1093/mnrasl/sly043
dc.identifier.issn17453925
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/23394
dc.language.isoenes
dc.publisherOxford University Presses
dc.subjectLenses
dc.subjectQuasarses
dc.subjectGalaxieses
dc.subjectGravitational lensing: stronges
dc.subjectMethods: observationales
dc.titleDiscovery of three strongly lensed quasars in the Sloan Digital Sky Surveyes
dc.typeArtículoes
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