135 citations · 596 across the 24 of their papers we have counts for
7 papers · 1 filter
Fe II velocity shifts in optical spectra of type 1 AGN
E. Bon, P. Marziani, M. Berton +4
Here we present a critical view of practical problems in the analysis of optical Fe II emission lines of Type 1 AGN spectra. Besides the very complex and unclear physical interpret…
Highly accreting quasars: The SDSS low-redshift catalog
C. A. Negrete, D. Dultzin, P. Marziani +8
The most highly accreting quasars (xA) are of special interest in studies of the physics of AGNs and host galaxy evolution. Quasars accreting at high rates (L/LEdd 1) hold p…
Narrow-line Seyfert 1s: what is wrong in a name?
P. Marziani, A. del Olmo, M. D' Onofrio +6
Narrow-line Seyfert 1s (NLSy1s) are an ill-defined class. Work done over the past 20 years as well as recent analyses show a continuity in properties (e.g., Balmer line profiles, b…
Exploring possible relations between optical variability time scales and broad emission line shapes in AGN
E. Bon, P. Jovanovic, P. Marziani +2
Here we investigate the connection of broad emission line shapes and continuum light curve variability time scales of type-1 Active Galactic Nuclei (AGN). We developed a new model…
Spectroscopy and spectropolarimetry of AGN: from observations to modelling
L. C. Popovic, D. Ilic, E. Bon +10
Active galactic nuclei (AGN) are one of the most luminous objects in the Universe, emitting powerful continuum and line emission across all wavelength bands. They represent an impo…
A main sequence for quasars
P. Marziani, D. Dultzin, J. W. Sulentic +7
The last 25 years saw a major step forward in the analysis of optical and UV spectroscopic data of large quasar samples. Multivariate statistical approaches have led to the definit…
AGN Broad Line Region variability in the context of Eigenvector 1: case of NGC 5548
Nataša Bon, Edi Bon, Paola Marziani
Many active galactic nuclei (AGN) show strong variability of the optical continuum. Since the line flux, profile shapes and intensity ratios are changing, we analyze the variabilit…