UV brightest known intermediate redshift QSO:, A z=1.15 DLA and metals in the Ly Alpha forest

Details UV brightest known intermediate redshift QSO:, A z=1.15 DLA and metals in the Ly Alpha forest UV brightest known intermediate redshift QSO:, A z=1.15 DLA and metals in the Ly Alpha forest

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8288r&link_type=abstract

HST Proposal ID #8288

Physics

Hst Proposal Id #8288 Quasar Absorption Lines

Scientific paper

We propose to observe with STIS the DLA system at z = 1.15 and the Ly Alpha forest in HE 0515-4414, with V = 14.9 and z = 1.71 the brightest known QSO above z = 1.5 {also in the UV with a flux of > 5x10^-15 erg/cm^2/s^1/Angstrom}. We plan to observe the unabsorbed range from 2300 to 3100 Angstrom at a resolution of 30 000 with the following aims: {i} to detect the Ly Alpha forest at z < 1.5 in order to investigate the evolution of metallicity in the Ly Alpha forest by means of optical spectra at extremely high resolution and S/N covering CIV {z = 1 to 1.5} and SiIV {1.3 to 1.5}; {ii} to determine element abundances in the damped Ly Alpha system at z = 1.15 from ions not accessible from the ground { HI, SII, SIII, PII, PV, SiIII, SiIV, CII, CIII, OI, NII, NI, ArI, etc.}.

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