Bright lenses are easy to find: Spectroscopic confirmation of lensed quasars in the Southern Sky

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dc.contributor.authorSpiniello, C.
dc.contributor.authorAgnello, A.
dc.contributor.authorSergeyev, A. V.
dc.contributor.authorAnguita, T.
dc.contributor.authorRodriguez, O.
dc.contributor.authorNapolitano, N. R.
dc.contributor.authorTortora, C.
dc.date.accessioned2023-06-06T14:51:07Z
dc.date.available2023-06-06T14:51:07Z
dc.date.issued2019-03-01
dc.descriptionIndexación Scopuses
dc.description.abstractGravitationally lensed quasars are valuable, but extremely rare, probes of observational cosmology and extragalactic astrophysics. Progress in these fields has been limited just by the paucity of systems with good ancillary data. Here we present a first spectroscopic confirmation of lenses discovered in the Southern Sky from the DES and KiDS-DR3 footprints. We have targeted seven high-graded candidates, selected with new techniques, with NTT-EFOSC2, and confirmed five of them. We provide source spectroscopic redshifts, image separations, gri photometry, and first lens model parameters. The success rate of ∼70 percent confirms our forecasts, based on the comparison between the number of candidate doubles and quadruplets in our searches over a ≈5000 deg2 footprint and theoretical predictions.es
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 483, Issue 3, Pages 3888 - 3893 1 March 2019es
dc.identifier.doi10.1093/mnras/sty3407en
dc.identifier.issn003-58711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50363
dc.language.isoenes
dc.publisherMonthly Notices of the Royal Astronomical Societyes
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectGalaxies: formationes
dc.subjectGravitational lensing: stronges
dc.subjectSurveyses
dc.titleBright lenses are easy to find: Spectroscopic confirmation of lensed quasars in the Southern Skyes
dc.typeArtículoes
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