185 citations · 1.4k across the 24 of their papers we have counts for
18 papers · 1 filter
VLT/ISAAC Spectra of the Hbeta Region in Intermediate-Redshift Quasars III. Hbeta Broad Line Profile Analysis and Inferences about BLR Structure
P. Marziani, J. W. Sulentic, G. M. Stirpe +2
[Abridged] We present new VLT ISAAC spectra for 30 quasars, which we combine with previous data to yield a sample of 53 intermediate redshift (z ~ 0.9 - 3.0) sources. The sample is…
Do flares in Sagittarius A* reflect the last stage of tidal capture?
A. Cadez, M. Calvani, A. Gomboc +1
In recent years the case for the presence of 3-4 10^6 M_sun black hole in our Galactic Center has gained strength from results of stellar dynamics observations and from the detecti…
VLT/ISAAC Spectra of the H-beta Region in Intermediate-Redshift Quasars II. Black Hole Mass and Eddington Ratio
J. W. Sulentic, P. Repetto, G. M. Stirpe +3
We derive black hole masses for a sample of about 300 AGNs in the redshift range 0 < z < 2.5. We use the same virial velocity measure (FWHM Hbeta broad component) for all sources w…
Low Redshift BAL QSOs in the Eigenvector 1 Context
J. W. Sulentic, D. Dultzin-Hacyan, P. Marziani +4
We attempt to characterize the geometry of Broad Absorption Line (BAL) QSOs by studying a low redshift sample of 12 sources. We find that the majority of these sources are Populati…
Average UV Quasar Spectra in the Context of Eigenvector 1: A Baldwin Effect Governed by Eddington Ratio?
R. Bachev, P. Marziani, J. W. Sulentic +3
We present composite UV spectra for low redshift Type 1 AGN binned to exploit the information content of the Eigenvector 1 (E1) parameter space. Composite spectra allow a decomposi…
VLT/ISAAC Spectra of the H-beta Region in Intermediate Redshift Quasars
J. W. Sulentic, G. M. Stirpe, P. Marziani +3
We present high S/N spectra of the H-beta region in 17 intermediate redshift (0.85 le z le 2.5) quasars. The spectra represent first results of our campaign to test the redshift/lu…