STIS Observations of QSO Pairs

Details STIS Observations of QSO Pairs STIS Observations of QSO Pairs

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8126p&link_type=abstract

HST Proposal ID #8126

Computer Science

Hst Proposal Id #8126 Quasar Absorption Lines

Scientific paper

We propose to obtain STIS ultraviolet spectra of four QSO pairs with similar common redshift ranges {z 0.7-1} and projected linear separations gradually increasing from 0.5 to sim1 h^-1_100 Mpc in order {i} to probe the extension and structure of gaseous complexes giving rise to the formation of LyAlpha absorption lines at intermediate redshift {z 0.9} {ii} to investigate the transversal proximity effect of the foreground quasar along the line of sight to the background quasar; {iii} study the environment in which QSOs reside and in particular the presence of gas around the foreground quasar. Given the brightness of the QSOs to be observed {B eq 17.9 - 18.4} and the spectral range of interest {1900 Angstrom <= Lambda <= 3100 Angstrom}, HST + STIS provides us with the unique existing instrumental capability to perform the proposed observations.

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