187 citations · 681 across the 16 of their papers we have counts for
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astro-ph.CO2012★ 29 cited
The He II Post-Reionization Epoch: HST/COS Observations of the Quasar HS1700+6416
David Syphers, J. Michael Shull
The reionization epoch of singly ionized helium (He II) is believed to start at redshifts z~3.5--4 and be nearly complete by z~2.7. We explore the post-reionization epoch with far-…
astro-ph.CO2012★ 11 cited
The Properties of Two Low Redshift O VI Absorbers and Their Associated Galaxies Toward 3C 263
B. Savage, T. -S. Kim, B. Keeney +3
Ultraviolet observations of the QSO 3C 263 (zem = 0.652) with COS and FUSE reveal O VI absorption systems at z = 0.06342 and 0.14072 . WIYN multi-object spectrograph observations p…
astro-ph.CO2012★ 35 cited
HST/COS Observations of Thirteen New He II Quasars
David Syphers, Scott F. Anderson, Wei Zheng +3
The full reionization of intergalactic helium was a major event in the history of the IGM, and UV observations of the He II Gunn-Peterson trough allow us to characterize the end of…