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Near-IR Spectroscopy of High-z QSOs: Relating the Broad and Narrow-Line Regions

Published online by Cambridge University Press:  12 April 2016

M.S. Brotherton
M.S. Brotherton*
Affiliation:
The University of Texas, Austin, TX 78712, USA

Extract

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Recent investigations of the broad UV lines in luminous QSOs identified strong correlations involving emission-line widths, shifts, equivalent widths, and ratios (Francis et al. 1992; Wills et al. 1993; Brotherton et al. 1994a, b). A simple model developed to explain these trends approximates UV broad lines as emission from two regions, an intermediate-line region (ILR), and a very broad-line region (VBLR), together comprising the traditional broad-line region (BLR). The observed and derived properties for the ILR and VBLR are summarized in Table 1, along with typical values for the narrow-line region (NLR).

Type
V. Emission Lines, Absorption Lines, the Continuum, and their Relationships
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 258 - 259
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

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