56 citations · 246 across the 13 of their papers we have counts for
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astro-ph.CO2013★ 56 cited
Interpreting the Ionization Sequence in AGN Emission-Line Spectra
Chris T. Richardson, James T. Allen, Jack A. Baldwin +2
We investigate the physical cause of the great range in the ionization level seen in the spectra of narrow lined active galactic nuclei (AGN). Mean field independent component anal…
astro-ph.CO2013★ 29 cited
Classification and analysis of emission-line galaxies using mean field independent component analysis
James T. Allen, Paul C. Hewett, Chris T. Richardson +2
We present an analysis of the optical spectra of narrow emission-line galaxies, based on mean field independent component analysis (MFICA). Samples of galaxies were drawn from the…