237 citations · 1.9k across the 67 of their papers we have counts for
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Fifty Years of Quasars: Physical Insights and Potential for Cosmology
J. W. Sulentic, P. Marziani, D. Dultzin +2
Last year (2013) was more or less the 50th anniversary of the discovery of quasars. It is an interesting time to review what we know (and don't know) about them both empirically an…
Low- and high-z highly accreting quasars in the 4D Eigenvector 1 context
Paola Marziani, Jack W. Sulentic, C. Alenka Negrete +4
Highly accreting quasars are characterized by distinguishing properties in the 4D eigenvector 1 parameter space that make them easily recognizable over a broad range range of redsh…
UV spectral diagnostics for low redshift quasars: estimating physical conditions and radius of the Broad Line Region
P. Marziani, J. W. Sulentic, C. A. Negrete +5
The UV spectral range (1100 - 3000 A) contains the strongest resonance lines observed in active galactic nuclei (AGN). Analysis of UV line intensity ratios and profile shapes in qu…
GTC Spectra of z ~ 2.3 Quasars: Comparison with Local Luminosity Analogues
Jack W. Sulentic, Paola Marziani, Ascensión del Olmo +3
[Abridged] Context: The advent of 8-10m class telescopes makes possible for the first time detailed comparison of quasars with similar luminosity and very different redshifts. Aims…
A new method to obtain the Broad Line Region size of high redshift quasars
C. A. Negrete, D. Dultzin, P. Marziani +1
We present high S/N UV spectra for eight quasars at z 3 obtained with VLT/FORS. The spectra enable us to analyze in detail the strong and weak emission features in the rest-…