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Low ionization lines in high luminosity quasars: The calcium triplet
Mary Loli Martínez-Aldama, Deborah Dultzin, Paola Marziani +4
In order to investigate where and how low ionization lines are emitted in quasars we are studying a new collection of spectra of the CaII triplet at 8498, 8542, 8662 obser…
Low Ionization Emission Lines in Quasars: Clues from OI 8446 and the CaII Triplet
Paola Marziani, Mary Loli Martinez-Aldama, Deborah Dultzin +1
The formation of low emission lines in quasars and active galactic nuclei is still an open issue. Aided by the organizing power of the 4D eigenvector 1 scheme, we review basic deve…
Techniques for Profile Binning and Analysis of Eigenvector Composite Spectra: Comparing Hbeta and MgII 2800 as Virial Estimators
Jack W. Sulentic, Paola Marziani, Ascension del Olmo +1
We review the basic techniques for extracting information about quasar structure and kinematics from the broad emission lines in quasars. We consider which lines can most effective…
Quasars and their emission lines as cosmological probes
Paola Marziani, Jack W. Sulentic
Quasars are the most luminous sources in the Universe. They are currently observed out to redshift z ~ 7 when the Universe was less than one tenth of its present age. Since their d…
Exploring Low Luminosity Quasar Diversity at z ~ 2.5 with the Gran Telescopio Canarias
J. W. Sulentic, A. del Olmo, P. Marziani
We present preliminary results from a pencil-beam spectroscopic survey of low-luminosity quasars at z ~ 2.2-2.5. Our goal is to compare these sources with low redshift analogues of…
The hybrid solution for the Fundamental Plane
M. D'Onofrio, G. Fasano, A. Moretti +14
By exploiting the database of early-type galaxies (ETGs) members of the WINGS survey of nearby clusters, we address here the long debated question of the origin and shape of the Fu…