3 papers
astro-ph1998
A HST Spectroscopic study of QSOs with intermediate redshift damped Lyman-alpha systems
Patrick Boisse, Vincent Le Brun, Jacqueline Bergeron +1
We present HST spectra for a sample of six QSOs with intermediate redshift (z_a < 1) damped Ly-alpha systems. These observations aim at measuring the HI column density and detect m…
astro-ph1997
The Lyman continuum radiation escaping from galaxies
J. -M. Deharveng, S. Faisse, B. Milliard +1
The H-alpha luminosity density of galaxies is used to calculate the local diffuse radiation field at the Lyman limit as resulting from star formation in the universe. The fraction…
astro-ph1996
The nature of intermediate-redshift damped Ly-alpha absorbers
V. Le Brun, J. Bergeron, P. Boisse +1
We present HST/WFPC2 high-spatial resolution images in the R and B bands of the close environment of the sightlines to seven quasars which spectra show either a damped Ly-alpha abs…