282 citations · 1.3k across the 39 of their papers we have counts for
6 papers · 1 filter
Statistical analysis of AlIII 1860 and CIII] 1909 emission lines as virial black hole mass estimators in quasars
T. M. Buendia-Rios, C. A. Negrete, P. Marziani +1
We test the usefulness of the intermediate ionisation lines AlIII 1860 and CIII] 1909 as reliable virial mass estimators for quasars. We identify a sample of 309 quasars from the S…
Unravelling the nature of the dual AGN in the galaxy pair system IRAS 05589+2828 and 2MASX J06021107+2828382
E. Benítez, E. Jiménez-Bailón, C. A. Negrete +10
We have studied the nuclear region of the previously detected dual AGN system in the galaxy pair IRAS 05589+2828 and 2MASX J06021107+2828382 through new optical spectroscopy observ…
High Metal Content of Highly Accreting Quasars: Analysis of an Extended Sample
Karla Garnica, C. Alenka Negrete, Paola Marziani +3
We present an analysis of UV spectra of quasars at intermediate redshifts believed to belong to the extreme Population A (xA), aimed to estimate the chemical abundances of the broa…
The Lockman-SpReSO project. Description, target selection, observations and preliminary results
M. González-Otero, C. P. Padilla-Torres, J. Cepa +26
Context. Extragalactic surveys are a key tool for better understanding the evolution of galaxies. Both deep and wide-field surveys serve to provide a clearer emerging picture of th…
SDSS-IV MaNGA: Identification and Multiwavelength Properties of Type-1 AGN in the DR15 sample
Edgar Cortes-Suárez, C. Alenka Negrete, Héctor M. Hernández-Toledo +2
We present a method to identify type-1 active galactic nuclei (AGN) in the central 3 arcsec integrated spectra of galaxies in the MaNGA DR15 sample. It is based on flux ratios esti…
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…