Discovery of a z = 0 . 808 damped Ly α system
نویسندگان
چکیده
We present the observation of a new intermediate redshift damped Lyα absorption system candidate, discovered in the course of a spectroscopic follow-up for identifying the sources detected in a 150Å-wide bandpass UV-imaging survey at 2000Å. The system displays very strong Mg ii and Fe ii lines and a high Fe ii/Mg ii 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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as tr o - ph / 9 40 50 03 2 M ay 1 99 4 Damped
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