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STIS Observations of He II Gunn-Peterson Absorption Toward Q0302-003
S. R. Heap, G. M. Williger, A. Smette +5
The ultraviolet spectrum (1145--1720A) of the distant quasar Q 0302--003 (z=3.286) was observed at 1.8A resolution with the Space Telescope Imaging Spectrograph aboard the Hubble S…
First Comparison of Ionization and Metallicity in Two Lines of Sight Toward HE 1104-1805 AB at z=1.66
Sebastian Lopez, Dieter Reimers, Michael Rauch +2
Using new HST/FOS, NTT/EMMI, and Keck/HIRES spectra of the gravitationally-lensed double QSO HE 1104-1805 AB (z=2.31, θ=3.2), and assuming UV photoionization by a metagalactic radi…
HST Observations of the QSO pair Q1026-0045A,B
Patrick Petitjean, Jean Surdej, Alain Smette +3
The spatial distribution of the Ly forest is studied using new HST data for the quasar pair Q~1026--0045 A and B at = 1.438 and 1.520 respectively. The angular separati…