681 citations · 1.3k across the 19 of their papers we have counts for
20 papers
Super-Eddington Accretion in Quasars
P. Marziani, K. Garnica Luna, A. Floris +5
This review provides an observational perspective on the fundamental properties of super-Eddington accretion onto supermassive black holes in quasars. It begins by outlining the se…
AT 2021hdr: A candidate tidal disruption of a gas cloud by a binary super massive black hole system
L. Hernández-García, A. M. Muñoz-Arancibia, P. Lira +25
With a growing number of facilities able to monitor the entire sky and produce light curves with a cadence of days, in recent years there has been an increased rate of detection of…
Exploring the links between quasar winds and radio emission along the Main Sequence at high redshift
A. Deconto-Machado, A. del Olmo, P. Marziani
Despite the increasing prevalence of RL sources at cosmic noon, our understanding of the underlying physics that governs the accretion disc outflows in these particular sources and…
Chemical abundances along the quasar main sequence
A. Floris, P. Marziani, S. Panda +5
The 4D eigenvector 1 (E1) sequence has emerged as a powerful tool for organizing the observational and physical characteristics of type-1 active galactic nuclei (AGNs). In this stu…
The Quasar 3C 47: Extreme Population B Jetted Source With Double-peaked Profile
Shimeles Terefe Mengistue, Paola Marziani, Ascensión del Olmo +3
Context. An optically thick, geometrically thin accretion disk (AD) around a supermassive black hole might contribute to broad-line emission in type-1 active galactic nuclei (AGN).…
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…
High-redshift quasars along the Main Sequence
A. Deconto-Machado, A. del Olmo, P. Marziani +2
We aim to evaluate the behaviour of our 22 high-redshift (2.2 < z < 3.7) and high-luminosity (47.39 < Lbol < 48.36) quasars in the context of the 4-Dimensional Eigenvector 1. Our a…
What about high redshift sources in the Main Sequence of quasars?
A. Deconto-Machado, A. del Olmo Orozco, P. Marziani
Much effort has been done in order to better understand the active galactic nuclei mechanisms behind the relativistic jets observed in radio-loud sources. These phenomena are commo…
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…
Isolating an outflow component in single-epoch spectra of quasars
Paola Marziani, Alice Deconto-Machado, Ascension del Olmo
Gaseous outflows appear to be a universal property of type-1 and type-2 active galactic nuclei (AGN). The main diagnostic is provided by emission features shifted to higher frequen…
Gas phase metallicity determinations in nearby AGNs with SDSS-IV MaNGA: evidence of metal poor accretion
Janaína C. do Nascimento, Oli L. Dors, Thaisa Storchi-Bergmann +8
We derive the metallicity (traced by the O/H abundance) of the Narrow Line Region ( NLR) of 108 Seyfert galaxies as well as radial metallicity gradients along their galaxy disks an…
Ionised Gas Kinematics in MaNGA AGN. Extents of the Narrow Line and Kinematically Disturbed regions
A. Deconto-Machado, R. A. Riffel, G. S. Ilha +11
We analyse the kinematics of 170 AGN host galaxies as compared to those of a matched control sample of non-active galaxies from the MaNGA survey in order to characterise and estima…
The Main Sequence of quasars: the taming of the extremes
P. Marziani, E. Bon, N. Bon +12
The last few years have seen the confirmation of several trends associated with the quasar main sequence. The idea of a main sequence for quasars is relatively recent, and its full…
The first 62 AGN observed with SDSS-IV MaNGA - IV: gas excitation and star-formation rate distributions
Janaína C. do Nascimento, Thaisa Storchi-Bergmann, Nícolas D. Mallmann +8
We present maps of the ionized gas flux distributions, excitation, star-formation rate SFR, surface mass density , and obtain total values of SFR and ionized gas masses {\i…
The first 62 AGN observed with SDSS-IV MaNGA -- III: stellar and gas kinematics
Gabriele S. Ilha, Rogemar A. Riffel, Jaderson S. Schimoia +13
We investigate the effects of Active Galactic Nuclei (AGN) on the gas kinematics of their host galaxies, using MaNGA data for a sample of 62 AGN hosts and 109 control galaxies (ina…
Precessing winds from the nucleus of the prototype Red Geyser?
Rogemar A. Riffel, Rodrigo Nemmen, Gabriele S. Ilha +10
Super-massive black holes (SMBH) are present at the center of most galaxies, with the related mass accretion processes giving origin to outflows in Active Galactic Nuclei (AGN). It…
The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA Derived Quantities, Data Visualization Tools and Stellar Library
D. S. Aguado, Romina Ahumada, Andres Almeida +230
Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by the fourth phase of SDSS (SDSS-IV) across its first three years o…
The first 62 AGN observed with SDSS-IV MaNGA - II: resolved stellar populations
Nícolas Dullius Mallmann, Rogério Riffel, Thaisa Storchi-Bergmann +10
We present spatially resolved stellar population age maps, average radial profiles and gradients for the first 62 Active Galactic Nuclei (AGN) observed with SDSS-IV MaNGA to study…
The first 62 AGN observed with SDSS-IV MaNGA - I: their characterization and definition of a control sample
Sandro B. Rembold, Jáderson S. Shimoia, Thaisa Storchi-Bergmann +16
We report the characterization of the first MaNGA Active Galactic Nuclei (AGN) hosts in the Fifth Product Launch (MPL-5) and the definition of a control sample of non-active g…
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
Bela Abolfathi, D. S. Aguado, Gabriela Aguilar +344
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourtee…