Abstract
We present graphically the results of several thousand photoionization calculations of broad emission-line clouds in quasars, spanning 7 orders of magnitude in hydrogen ionizing flux and particle density. The equivalent widths of 42 quasar emission lines are presented as contours in the particle density-ionizing flux plane for a typical incident continuum shape, solar chemical abundances, and cloud column density of N(H) = 1023 cm-2. Results are similarly given for a small subset of emission lines for two other column densities (1022 and 1024 cm-2), five other incident continuum shapes, and a gas metallicity of 5 Z☉. These graphs should prove useful in the analysis of quasar emission-line data and in the detailed modeling of quasar broad emission-line regions. The digital results of these emission-line grids and many more are available over the Internet.
Document Type
Article
Publication Date
2-1997
Digital Object Identifier (DOI)
http://dx.doi.org/10.1086/312966
Repository Citation
Korista, Kirk; Baldwin, Jack; Ferland, Gary J.; and Verner, Dima, "An Atlas of Computed Equivalent Widths of Quasar Broad Emission Lines" (1997). Physics and Astronomy Faculty Publications. 146.
https://uknowledge.uky.edu/physastron_facpub/146
Notes/Citation Information
Published in The Astrophysical Journal Supplement Series, v. 108, no. 2, p. 401-415.
©1997. The American Astronomical Society. All rights reserved.
The copyright holder has granted permission for posting the article here.