The very high-redshift Lyα forest at high resolution

Details The very high-redshift Lyα forest at high resolution The very high-redshift Lyα forest at high resolution

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pgqa.conf..357b&link_type=abstract

Probing Galaxies through Quasar Absorption Lines, IAU Colloquium Proceedings of the International Astronomical Union 199, held M

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Scientific paper

We present new KECK/hires observations of seven of the highest-redshift known quasars. These include four with zQSO≥ 5.8 and two with zQSO≥ 6.3. The data will be used to produced a complete statistical description of the Lyα forest at z > 5, allowing us to better assess the significance of the strong absorption seen at z>6.2. We introduce the statistics of transmission gaps as a means of characterising the high-redshift evolution of the forest. In addition, we identify several clear absorption lines of low optical depth in the quasar proximity regions and briefly discuss using these to place constraints on the thermal history of the igm at z>5.

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