742 citations · 1.6k across the 35 of their papers we have counts for
36 papers
From sub-solar to super-solar chemical abundances along the quasar main sequence
Paola Marziani, Alberto Floris, Alice Deconto-Machado +8
The 4D Eigenvector 1 sequence has proven to be a highly effective tool for organizing observational and physical properties of type 1 active galactic nuclei (AGN). In this paper, w…
Saturation of the curve -- diagnostics of the continuum and H emission in Population B active galaxy NGC 5548
Swayamtrupta Panda, Edi Bon, Paola Marziani +1
NGC 5548 has been hailed as an archetypical type-1 active galactic nuclei (AGN) and serves as a valuable laboratory to study the long-term variation of its broad-line region (BLR).…
Broad-line region in NGC 4151 monitored by two decades of reverberation mapping campaigns. I. Evolution of structure and kinematics
Yong-Jie Chen, Dong-Wei Bao, Shuo Zhai +33
We report the results of long-term reverberation mapping (RM) campaigns of the nearby active galactic nuclei (AGN) NGC 4151, spanning from 1994 to 2022, based on archived observati…
The intermediate-ionization lines as virial broadening estimators for Population A quasars
P. Marziani, A. del Olmo, C. A. Negrete +10
The identification of a virial broadening estimator in the quasar UV rest frame suitable for black hole mass computation at high redshift has become an important issue. We compare…
Optical singly-ionized iron emission in radio-quiet and relativistically jetted active galactic nuclei
Paola Marziani, Marco Berton, Swayamtrupta Panda +1
The issue of the difference between optical and UV properties of radio-quiet and radio-loud (relativistically "jetted") active galactic nuclei (AGN) is a long standing one, related…
Taming the derivative: diagnostics of the continuum and H emission in a prototypical Population B active galaxy
Swayamtrupta Panda, Edi Bon, Paola Marziani +1
We report preliminary results on the analysis of the continuum and H light curves of the type-1 active galactic nucleus (AGN) NGC 5548. We notice a clear signature of shallowing…