T AnguitaP L SchechterN KuropatkinN D MorganF OstrovskiL E AbramsonA AgnelloY ApostolovskiC D FassnachtJ W HsuehMotta, VerónicaVerónicaMottaK RojasC E RusuT TreuP WilliamsM AugerE Buckley-GeerH LinR McMahonT M C AbbottS AllamJ AnnisR A BernsteinE BertinD BrooksD L BurkeA Carnero RosellM Carrasco KindJ CarreteroC E CunhaC B D’AndreaJ De VicenteD L DePoyS DesaiH T DiehlP DoelB FlaugherJ García-BellidoD W GerdesD GruenR A GruendlJ GschwendW G HartleyD L HollowoodK HonscheidD J JamesK KuehnM LimaM A G MaiaR MiquelA A PlazasE SanchezV ScarpineM SmithM Soares-SantosF SobreiraE SuchytaG TarleA R Walker2025-12-072025-12-072018-08-0810.1093/mnras/sty21722-s2.0-85054806480https://cris-uv-2.scimago.es/handle/123456789/7726WOS:000449617100058We report upon the follow up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT-EFOSC, Magellan-IMACS, KECK-ESI and SOAR-SAMI. These candidates were selected by a combination of double component fitting, morphological assessment and color analysis. Most systems followed up are indeed composed of at least one quasar image and 13 with two or more quasar images: two lenses, four projected binaries and seven Nearly Identical Quasar Pairs (NIQs). The two systems confirmed as genuine gravitationally lensed quasars are one quadruple at $z_s=1.713$ and one double at $z_s=1.515$. Lens modeling of these two systems reveals that both systems require very little contribution from the environment to reproduce the image configuration. Nevertheless, small flux anomalies can be observed in one of the images of the quad. Further observations of 9 inconclusive systems (including 7 NIQs) will allow to confirm (or not) their gravitational lens nature.enacceso abiertoAstronomy And AstrophysicsSpace And Planetary Sciencearticle