Are Damped Ly-alpha Systems Large, Galactic Disks ?

Details Are Damped Ly-alpha Systems Large, Galactic Disks ? Are Damped Ly-alpha Systems Large, Galactic Disks ?

1999-07-26

arxiv.org/abs/astro-ph/9907349v1

Astrophys.Space Sci. 276 (2001) 999-1006

Astronomy and Astrophysics

Astrophysics

8 pages incl. 5 figures (Kluwer Proceedings format). Contribution to the Euroconference "The Evolution of Galaxies on Cosmolog

Scientific paper

10.1023/A:1017584500541

The hypothesis that the Damped Ly-alpha systems (DLAs) are large, galactic disks (Milky Way sized) is tested by confronting predictions of models of the formation and evolution of (large) disk galaxies with observations, in particular the Zinc abundance distribution with neutral hydrogen column density found for DLAs. A pronounced mismatch is found strongly hinting that the majority of DLAs may not be large, galactic disks.

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