Observations of the Ca ii IR Triplet in High Luminosity Quasars: Exploring the Sample |
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| Authors: | Mary Loli Martínez-Aldama Paola Marziani Deborah Dultzin Jack W. Sulentic Alessandro Bressan Yang Chen Giovanna M. Stirpe |
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| Affiliation: | 1.Instituto de Astronomía,Universidad Nacional Autónoma de México,México,Mexico;2.INAF, Osservatorio Astronomico di Padova,Padova,Italy;3.Instituto de Astronomía de Andalucía (CSIC),Granada,Spain;4.Scuola Internazionale Superiore di Studi Avanzati (SISSA),Trieste,Italy;5.INAF, Osservatorio Astronomico di Bologna,Bologna,Italy |
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| Abstract: | We 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. |
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