Discovery of a z=0.808 damped Lyman-alpha system candidate in a UV selected quasar spectrum

Details Discovery of a z=0.808 damped Lyman-alpha system candidate in a UV selected quasar spectrum Discovery of a z=0.808 damped Lyman-alpha system candidate in a UV selected quasar spectrum

1998-09-30

arxiv.org/abs/astro-ph/9809402v1

Astronomy and Astrophysics

Astrophysics

4 pages, uses l-aa.sty Accepted for publication in A&A Main Journal

Scientific paper

We present the observation of a new intermediate redshift damped Lyman-alpha absorption system candidate, discovered in the course of a spectroscopic follow-up for identifying the sources detected in a 150 A wide bandpass UV-imaging survey at 2000 A. The system displays very strong MgII and FeII lines and a high FeII/MgII ratio, which, following photoionization models, indicates a very high neutral hydrogen column density. Such kind of systems being very rare at redshifts <1.7, but of prime importance for understanding the evolution of star formation in galaxies, the newly discovered candidate deserves further investigations in a near future

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