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Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars
Rajib Ganguly, Michael S. Brotherton, Nahum Arav +35
We present low-resolution ultraviolet spectra of 14 low redshift (z<0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outf…
Extreme Ultraviolet Absorption Lines in LyA Forest Absorbers and the Oxygen Abundance in the Intergalactic Medium
R. C. Telfer, G. A. Kriss, W. Zheng +2
We create stacked composite absorption spectra from Hubble Space Telescope Faint Object Spectrograph data from four quasi-stellar objects to search for absorption lines in the extr…
The Rest-Frame Extreme Ultraviolet Spectral Properties of QSOs
R. C. Telfer, W. Zheng, G. A. Kriss +1
We use a sample of 332 Hubble Space Telescope spectra of 184 QSOs with z > 0.33 to study the typical ultraviolet spectral properties of QSOs, with emphasis on the ionizing continuu…
A Search for Extended Line Emission from BALQSOs
R. C. Telfer, G. A. Kriss, Z. Tsvetanov
We have obtained HST NICMOS snapshot images of ten BALQSOs and four radio-quiet non-BALQSOs to search for extended narrow-line regions. For each object we obtained an image in the…
The Very Highly Ionized Broad Absorption Line System of the QSO SBS1542+541
Randal C. Telfer, Gerard A. Kriss, Wei Zheng +2
We have analyzed the broad absorption line system of the bright (V=16.5) high-redshift (z=2.361) QSO SBS1542+541 using UV spectra from the HST FOS along with optical data from the…
A Composite HST Spectrum of Quasars
W. Zheng, G. A. Kriss, R. C. Telfer +2
We construct a composite quasar spectrum from 284 HST FOS spectra of 101 quasars with redshifts z > 0.33. The spectrum covers the wavelengths between 350 and 3000 A in the rest fra…