# Quasars with Anomalous Hβ Profiles. I. Demographics

@article{Steinhardt2013QuasarsWA,
title={Quasars with Anomalous H$\beta$ Profiles. I. Demographics},
author={Charles L. Steinhardt and John D. Silverman},
journal={Publications of the Astronomical Society of Japan},
year={2013},
volume={65},
pages={82}
}
• Published 2 September 2011
• Physics
• Publications of the Astronomical Society of Japan
The Hemission line in a typical Type I quasar is composed of a broad base and a narrow core, with the core velocity characteristic of narrow-line region emission, and line-fitting routines typically assume this picture. We test the effects of removing this constraint, and find a substantial group of Type I quasars in the Sloan Digital Sky Survey catalog with Hemission line cores broader than 1200 km s 1 , above the velocity believed possible for gas in the quasar narrow-line region. We identify…
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