Near‐Infrared Spectroscopy of High‐Redshift Active Galactic Nuclei. II. Disappearing Narrow‐Line Regions and the Role of Accretion

Abstract

This article presents near-infrared spectroscopic measurements of the Hβ region for a sample of 29 luminous high-redshift quasars, and uses the data to discuss the size and other properties of the narrow-line regions in those sources.