Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8182s&link_type=abstract
HST Proposal ID #8182
Physics
Hst Proposal Id #8182 Interstellar And Intergalactic Matter
Scientific paper
We propose to detect or at least place strong upper limits on the abundance of C IV in 7 strong {280-740 mAngstrom equivalent width} low-redshift LyAlpha absorption systems along the line of sight to the bright quasar H1821+643. This quasar lies in an extensively surveyed field, so that all LyAlpha absorbers are known to be within 10^2-10^3 kpc of a neighboring luminous galaxy. We will be sensitive to C IV absorption at the 15-30 mAngstrom level, well below the average C IV equivalent width associated with low-redshift LyAlpha absorbers of this strength, as inferred by line- stacking techniques using FOS data. The C IV measurements will begin to map the extent of the metals associated with galaxies or with the large-scale environment in which they form. Measurements of higher Lyman series lines scheduled for FUSE or already available will constrain the H I column density and hence the metallicity. As a result, initial studies of the metallicity gradient of the intergalactic medium {IGM} at large distances from luminous galaxies will be possible. Such studies are possible only at the lowest redshifts, where we know the locations of the LyAlpha clouds from HST spectroscopy and the galaxies from ground-based redshift surveys.
No associations
LandOfFree
The Extent of Metal Transport in the Low Redshift Intergalactic Medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Extent of Metal Transport in the Low Redshift Intergalactic Medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Extent of Metal Transport in the Low Redshift Intergalactic Medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-992797