Observations of the Ca ii IR Triplet in High Luminosity Quasars: Exploring the Sample

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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Correspondence to Mary Loli Martínez-Aldama.

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Martínez-Aldama, M.L., Marziani, P., Dultzin, D. et al. Observations of the Ca ii IR Triplet in High Luminosity Quasars: Exploring the Sample. J Astrophys Astron 36, 0 (2015). https://doi.org/10.1007/s12036-015-9354-9

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Key words

  • Quasars: general
  • quasars: emission lines
  • lines: profiles
  • star formation