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.
Observations of the Ca II IR Triplet in High Luminosity Quasars: Exploring the Sample / Martinez-Aldama, Mary Loli; Marziani, Paola; Dultzin, Deborah; Sulentic, Jack W.; Bressan, Alessandro; Chen, Yang; Stirpe, Giovanna M.. - In: JOURNAL OF ASTROPHYSICS AND ASTRONOMY. - ISSN 0250-6335. - 36:4(2015), pp. 457-465. [10.1007/s12036-015-9354-9]
Observations of the Ca II IR Triplet in High Luminosity Quasars: Exploring the Sample
Bressan, AlessandroMembro del Collaboration group
;Chen, YangMembro del Collaboration group
;
2015-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
