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Metallicities and Abundance Ratios from Quasar Broad Emission Lines
Fred Hamann, K. T. Korista, G. J. Ferland +2
The broad emission lines (BELs) of quasars and active galactic nuclei (AGNs) are important diagnostics of the relative abundances and overall metallicity in the gas. Here we presen…
HST STIS Observations of PG 0946+301: the Highest Quality UV Spectrum of a BALQSO
Nahum Arav, Martijn de Kool, Kirk T. Korista +16
We describe deep (40 orbits) HST/STIS observations of the BALQSO PG 0946+301 and make them available to the community. These observations are the major part of a multi-wavelength c…
On the Column Density of AGN Outflows: the Case of NGC 5548
Nahum Arav, Martijn de Kool, Kirk T. Korista
We re-analyze the HST high resolution spectroscopic data of the intrinsic absorber in NGC 5548 and find that the C IV absorption column density is at least four times larger than p…
The Variable Diffuse Continuum Emission of Broad Line Clouds
Kirk T. Korista, Michael R. Goad
We investigate the wavelength-dependent intensity and reverberation properties of the UV-optical diffuse continuum emission expected from broad emission line gas. The locally optim…