The correlation of the Lyman-alpha forest and metals in close pairs of hight-redshift quasars

Details The correlation of the Lyman-alpha forest and metals in close pairs of hight-redshift quasars The correlation of the Lyman-alpha forest and metals in close pairs of hight-redshift quasars

2005-09-20

arxiv.org/abs/astro-ph/0509608v1

Astronomy and Astrophysics

Astrophysics

To appear in The Fabulous Destiny of Galaxies: Bridging Past and Present, conference held in Marseille, June 2005

Scientific paper

We derive the transverse flux correlation function in the Lyman-alpha forest at z~2.1 from VLT-FORS observations of a total of 32 pairs of quasars. The shape and correlation length of the transverse correlation function are in good agreement with the paradigm of intergalactic medium predicted in CDM-like models for structures formation. Using a sample of 139 Civ systems detected along the lines of sight toward the pairs of quasars we investigate the transverse correlation of metals on the same scales. We find that the correlation function is consistent with that of a randomly distributed population of Civ systems. However, we detect an important overdensity of systems in front of a quartet.

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