122 citations · 441 across the 14 of their papers we have counts for
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Dramatic X-ray Spectral Variability of the Broad Absorption Line Quasar PG2112+059
S. C. Gallagher, W. N. Brandt, Beverley J. Wills +3
With a 1999 ASCA observation, PG2112+059 became notable as the first Broad Absorption Line (BAL) quasar found to exhibit a typical radio-quiet quasar X-ray continuum underlying a l…
An Intrinsic Absorption Complex Toward RXJ1230.8+0115: Geometry and Photoionization Conditions
Rajib Ganguly, Joseph Masiero, Jane C. Charlton +1
We present HST/STIS and FUSE spectra of the quasar RXJ1230.8+0115 (V=14.4, z=0.117). In addition to Galactic, Virgo, and intervening absorption, this quasar is host to a remarkable…
From Globular Clusters to Tidal Dwarfs: Structure Formation in the Tidal Tails of Merging Galaxies
Karen Knierman, Sarah Gallagher, Jane Charlton +5
Using V and I images obtained with WFPC2/HST, we investigate compact stellar structures within tidal tails. Six regions of tidal debris in the four classic ``Toomre Sequence'' merg…
The Multi-phase Absorption Systems Toward PG 1206+459
J. Ding, J. C. Charlton, C. W. Churchill +1
A high-resolution HST/STIS spectrum (R=30,000) is presented of the three MgII-selected absorption systems (A, B, and C, clustered within 1500km/s) at z~0.93 toward the quasar PG 12…
High Resolution STIS/HST and HIRES/Keck Spectra of Three Weak MgII Absorbers Toward PG 1634+706
J. C. Charlton, J. Ding, S. G. Zonak +3
High resolution optical (HIRES/Keck) and UV (STIS/HST) spectra, covering a large range of chemical transitions, are analyzed for three single-cloud weak MgII absorption systems alo…
A Quadruple-Phase Strong Mg II Absorber at z~0.9902 Toward PG 1634+706
J. Ding, J. C. Charlton, N. A. Bond +2
The z=0.9902 system along the quasar PG 1634+706 line of sight is a strong MgII absorber (W(2796)>0.3A) with only weak CIV absorption (it is ``CIV-deficient''). To study this syste…