DOI:
10.1007/s12036-015-9354-9
Authors:
Martínez-Aldama M.L., Marziani P., Dultzin D., Sulentic J.W., Bressan A., Chen Y., Stirpe G.M.
Journal:
Journal of Astrophysics and Astronomy
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. © 2015 Indian Academy of Sciences