187 citations · 717 across the 13 of their papers we have counts for
Showing 2014 · astro-ph.GAShow all
2 papers · 2 filters
astro-ph.GA2014★ 70 cited
Tracing the Cosmic Metal Evolution in the Low-Redshift Intergalactic Medium
J. Michael Shull, Charles. W. Danforth, Evan M. Tilton
Using the Cosmic Origins Spectrograph aboard the Hubble Space Telescope, we measured the abundances of six ions (C III, C IV, Si III, Si IV, N V, O VI) in the low-redshift (z < 0.4…
astro-ph.GA2014★ 134 cited
HST-COS Observations of AGN. II. Extended Survey of Ultraviolet Composite Spectra from 159 Active Galactic Nuclei
Matthew L. Stevans, J. Michael Shull, Charles W. Danforth +1
The ionizing fluxes from quasars and other active galactic nuclei (AGN) are critical for interpreting their emission-line spectra and for photoionizing and heating the intergalacti…