2k citations · 10.2k across the 187 of their papers we have counts for
5 papers · 1 filter
An Atlas of Computed Equivalent Widths of Quasar Broad Emission Lines
Kirk Korista, Jack Baldwin, Gary Ferland +1
We present graphically the results of several thousand photoionization calculations of broad emission line clouds in quasars, spanning seven orders of magnitude in hydrogen ionizin…
Accurate Hydrogen Spectral Simulations with a Compact Model Atom
Jason W. Ferguson, Gary J. Ferland
Many large scale numerical simulations of astrophysical plasmas must also reproduce the hydrogen ionization and the resulting emission spectrum, in some cases quite accurately. We…
Physical Conditions in Low Ionization Regions of the Orion Nebula
J. A. Baldwin, A. Crotts, R. J. Dufour +12
We reexamine the spectroscopic underpinnings of recent suggestions that [O I] and [Fe II] lines from the Orion H II region are produced in gas where the iron-carrying grains have b…
Atomic Data for Permitted Resonance Lines of Atoms and Ions from H to Si, and S, Ar, Ca and Fe
D. A. Verner, E. M. Verner, G. J. Ferland
We list vacuum wavelengths, energy levels, statistical weights, transition probabilities and oscillator strengths for permitted resonance spectral lines of all ions of 18 astrophys…
Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
D. A. Verner, G. J. Ferland, K. T. Korista +1
We present a complete set of analytic fits to the non-relativistic photoionization cross sections for the ground states of atoms and ions of elements from H through Si, and S, Ar,…