An ACS Prism Snapshot Survey for z~2 Lyman Limit Systems

Details An ACS Prism Snapshot Survey for z~2 Lyman Limit Systems An ACS Prism Snapshot Survey for z~2 Lyman Limit Systems

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop10878o&link_type=abstract

HST Proposal ID #10878. Cycle 15

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We propose to conduct a spectroscopic survey of Lyman limit absorbers at redshifts 1.7 < z < 2.2, using ACS/HRC and the PR200L prism. We have selected 100 quasars at 2.3 < z < 2.6 from the Sloan Digital Sky Survey Spectroscopic Quasar sample, for which no BAL signature is found at the QSO redshift and no strong metal absorption lines are present at z > 2.3 along the lines of sight. The survey has three main observational goals. First, we will determine the redshift frequency dN/dz of the LLS over the column density range 16.3

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