Extremely strong damped Lyα systems at high redshifts

We present a spectroscopic analysis of seven Extremely Strong Damped Lyα systems at redshifts z = 2-3, obtained with the intermediate-resolution spectrograph X-shooter on the Very Large Telescope. For all systems we estimated column densities of the neutral atomic hydrogen HI, metal abundances and d...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-12, Vol.1697 (1), p.12034
Main Authors: Telikova, K N, Balashev, S A, Noterdaeme, P, Krogager, J-K, Ranjan, A
Format: Article
Language:English
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Summary:We present a spectroscopic analysis of seven Extremely Strong Damped Lyα systems at redshifts z = 2-3, obtained with the intermediate-resolution spectrograph X-shooter on the Very Large Telescope. For all systems we estimated column densities of the neutral atomic hydrogen HI, metal abundances and dust depletion. We firmly detected molecular hydrogen H2 in two systems in our sample; for the remaining systems we set a conservative upper limits on the H2 column densities. The properties of the obtained systems are in consistency with the sample of the Extremely Strong Damped Lyα systems available in the literature.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1697/1/012034