papers
Publications (11)
astro-ph.CO2012
The He II Post-Reionization Epoch: HST/COS Observations of the Quasar HS1700+6416
David Syphers, J. Michael Shull
astro-ph.CO2014
HST/COS Observations of the Quasar Q0302-003: Probing the He II Reionization Epoch and QSO Proximity Effects
David Syphers, J. Michael Shull
astro-ph.CO2010
HST Spectral Observations near the He II Ly-alpha Break: Implications for He II Reionization
David Syphers, Scott F. Anderson, Wei Zheng +4
astro-ph2006
A Large, Uniform Sample of X-ray Emitting AGN from the ROSAT All-Sky and Sloan Digital Sky Surveys: the Data Release 5 Sample
Scott F. Anderson, Bruce Margon, Wolfgang Voges +16
astro-ph.GA2018
A Galaxy Redshift Survey near HST/COS AGN Sight Lines
Brian A. Keeney, John T. Stocke, Cameron T. Pratt +8
astro-ph.CO2009
Ten More New Sightlines for the Study of Intergalactic Helium, and Hundreds of Far-UV-Bright Quasars, from SDSS, GALEX, and HST
David Syphers, Scott F. Anderson, Wei Zheng +4
astro-ph2007
Eclipsing binary stars in the Large and Small Magellanic Clouds from the MACHO project: The Sample
Lorenzo Faccioli, Charles Alcock, Kem Cook +3
astro-ph2008
A High Yield of New Sightlines for the Study of Intergalactic Helium: Far-UV-Bright Quasars from SDSS, GALEX, and HST
David Syphers, Scott F. Anderson, Wei Zheng +6
astro-ph.CO2012
HST/COS Observations of Thirteen New He II Quasars
David Syphers, Scott F. Anderson, Wei Zheng +3
astro-ph.CO2011
He II Lyβ Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations
David Syphers, Scott F. Anderson, Wei Zheng +7
astro-ph.CO2015
An HST/COS Survey of the Low-Redshift IGM. I. Survey, Methodology, & Overall Results
Charles W. Danforth, Brian A. Keeney, Evan M. Tilton +12