Physics
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9418j&link_type=abstract
HST Proposal ID #9418
Physics
Hst Proposal Id #9418
Scientific paper
The sight-line to an extraordinarily bright quasar, PHL 1811, penetrates four gas systems at z{abs} < z{em} = 0.192. One of them is a Lyman limit system {LLS: N{H I} > 10^17.5 cm^-2} at z{abs} = 0.08088 which is especially well suited for a study of atomic abundances, local density, and ionization state. We propose to obtain a STIS E140M spectrum with moderately good S/N so that we can measure absorption features that will permit the determinations of overall metallicity of the system, its nucleosynthetic ratios Alpha/Fe and Alpha/N, the fractions and kinematics of ionized gas, and the amount of gas-phase element depletions caused by dust. The LLS should be close enough for us to identify an associated galaxy, but to be sure we do not miss one very close to the quasar in projection, we plan to supplement our spectrum with a short- exposure ACS HRC image of the quasar's immediate surroundings.
No associations
LandOfFree
The Sight-line toward PHL 1811: A Rare Chance to Probe a Lyman Limit System at Very Low Redshift 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 Sight-line toward PHL 1811: A Rare Chance to Probe a Lyman Limit System at Very Low Redshift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Sight-line toward PHL 1811: A Rare Chance to Probe a Lyman Limit System at Very Low Redshift will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-733472