Martínez-Aldama, Mary LoliMary LoliMartínez-AldamaMARZIANI, PaolaPaolaMARZIANIDultzin, DeborahDeborahDultzinSulentic, Jack W.Jack W.SulenticBRESSAN, AlessandroAlessandroBRESSANCHEN, YangYangCHENSTIRPE, Giovanna MariaGiovanna MariaSTIRPE2020-04-232020-04-2320150250-6335http://hdl.handle.net/20.500.12386/24200We present a new spectroscopic sample of 11 quasars at intermediate redshift observed with the Infrared Spectrometer and Array Camera (ISAAC) on the ESO Very Large Telescope (VLT), covering O i λ8446 and the Ca ii triplet 8498, 8542, 8662. The new observations - that supplement the sample presented by Martínez-Aldama et al. (2015) - allow us to confirm the constraints on physical conditions and location of the region emitting the low ionization lines, as well as the relation between Ca ii and Fe ii. <P />STAMPAenArticle10.1007/s12036-015-9354-92-s2.0-84956612792000368698700005https://link.springer.com/article/10.1007/s12036-015-9354-92015JApA...36..457MFIS/05 - ASTRONOMIA E ASTROFISICA