[Previous] | [Session 66] | [Next]
R. Ganguly, J. C. Charlton (Penn State University)
We present a high signal-to-noise spectrum of the {z\rm
em=2.97} radio-quiet quasar CSO 118 observed by the
Hobby-Eberly Telescope with the Marcario Low Resolution
Spectrograph. The R~1300 spectrum covers the wavelength
range {4300Å-7300Å} which includes the C IV, Si IV, N V,
and Ly {\alpha} emission lines and well as the Ly
{\alpha} forest down to z\approx2.5. We detect a complex
of six C IV--selected absorbers in the range {2.65 The line-of-sight velocity dispersion of the complex is
{~.5\times104~km s-1}, much larger than the
velocity dispersion of typical groups of galaxies
({\sigma\rm v~00~km s-1}). On the other hand,
if these absorbers constitute ejected material, the ejection
velocities range from {~300~km s-1} to
{~.3\times104~km s-1}. Intrinsic narrow
velocity dispersion absorbers have been reported with
ejection velocities as high as {~\times104~km
s-1}. It is also not unusual to have multiple
absorption systems intrinsic to a QSO. Broad absorption
lines, whose troughs extend from the QSO emission redshift
to {~.1c}, are typically accompanied by their narrow
kin.
In addition, we will present evidence that the three pairs
of systems may be line-locked. If verified, this would
enforce the intrinsic origin of these systems. We gratefully
acknowledge the support of two grants: NSF grant AST96-17185
and NASA grant NAG5-6399.
If you would like more information about this abstract, please
follow the link to http://www.astro.psu.edu/users/ganguly.
This link was provided by the
author. When you follow it, you will leave the Web site for this
meeting; to return, you should use the Back comand on your
browser.
The author(s) of this abstract have provided an email address
for comments about the abstract:
ganguly@astro.psu.edu