C. A. Negrete

TL;DR: In this paper, the authors compare broad emission-line profiles and estimate line ratios for all major emission lines between Lyα and Hβ in a sample of six quasars with two criteria in mind: the existence of high quality optical and ultraviolet spectra and the possibility of sampling the spectroscopic diversity in the 4D eigenvector 1 (4DE1) context.

TL;DR: In this article, the empirical correlates of the so-called "main sequence" associated with the quasar Eigenvector 1, its governing physical parameters and several implications on the view of quasar structure, as well as some luminosity effects associated with a virialized component of the line emitting regions.

TL;DR: In this paper, the authors used broad emission lines in quasars to resolve the structure and kinematics of the broad-line emitting region (BLR) thought to involve an accretion disk feeding a supermassive black hole.

TL;DR: In this paper, the authors used broad emission lines in quasars to resolve the structure and kinematics of the broad line emitting region (BLR) thought to in-volve an accretion disk feeding a supermassive black hole.

TL;DR: The most highly accreting quasars (xA) are of special interest in studies of the physics of AGNs and host galaxy evolution, and their observational properties are largely unknown as mentioned in this paper.