Lyα Clouds Associated with Pop III Objects in Cold Dark Matter Models
نویسندگان
چکیده
We present a semi-analytical model to test the hypothesis that Lyα QSO absorption lines originate in gaseous halos produced by multiple supernova explosions occurring in Pop III objects in a CDM cosmological scenario hoping to assess the validity of CDM models and/or constrain their parameters. The preliminary results indicate that the range of NHI , redshift distribution and metallicity of clouds are well reproduced by CDM if they are associated with galaxy halos or groups. Firm conclusions on clouds with NHI ≤ 10 14 cm need a more refined study. Subject headings: Cosmology: theory – dark matter –quasars: absorption lines
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