Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..217..268d&link_type=abstract
International Astronomical Union Symposium no. 217, held 14-17 July, 2003 in Sydney, Australia. Edited by P.-A. Duc, J. Braine
Astronomy and Astrophysics
Astronomy
Scientific paper
We took advantage of the ESO UVES/VLT archive of quasar spectra to build a homogeneous sample of `sub-DLAs', absorption line systems with Hi column densities between 1019 and 2× 1020 cm-2. According to Péroux et al. (2002), these systems should contain a major fraction of the neutral hydrogen mass at z>3.5 and may thus play an important role at high redshift. Twelve sub-DLAs have been identified. We performed a detailed chemical analysis, and addressed the issues of photoionization corrections. We obtained the first sub-DLA chemical abundance data base ideal for the study of a number of interesting properties of these systems. The implication of sub-DLAs in the cosmic metallicity evolution was our main concern. We also undertook a detailed comparison of the sub-DLA chemical properties with the well studied DLAs to see whether the sub-DLAs are associated with a different class of objects.
D'Odorico Sandro
Dessauges-Zavadsky Miroslava
Kim Tae Seong
McMahon Richard G.
Peroux Celine
No associations
LandOfFree
The First Sample of Sub-Damped Lyα Systems and their Chemical Properties does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The First Sample of Sub-Damped Lyα Systems and their Chemical Properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The First Sample of Sub-Damped Lyα Systems and their Chemical Properties will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-853019