Column density distribution of galactic Ly-alpha absorption systems

Details Column density distribution of galactic Ly-alpha absorption systems Column density distribution of galactic Ly-alpha absorption systems

2001-08-15

arxiv.org/abs/astro-ph/0108267v1

Astrophys. Space Sci. 271, 91

Astronomy and Astrophysics

Astrophysics

5 pages,no figures (uses kluwer.sty)

Scientific paper

A simple consistency argument for hypothesis of the galactic halo origin of the Ly-alpha forest absorption lines is advanced, based on the recent determination of column-density vs. impact parameter relation for the low-redshift gaseous galactic haloes. It is shown that observations of neutral hydrogen absorption around luminous galaxies are consistent with the index of the power-law column density distribution derived from statistical analysis of large samples of high-redshift Ly-alpha forest lines.

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