The Nature of Lyman-Break Galaxies

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作者：
Shu Chenggang Yin Xiao Shanghai Astronomical Observatory The Chinese Academy of Sciences Shanghai China Max Planck Institut fr Astrophysik Karl Schwarzschild Strasse Garching Germany Nationa [1 ,2 ,3 ,4 ,1 ,3 ,4 ,1 ,200030 ,2 ,1 ,85748 ,3 ]
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云南天文台台刊 | 1999年 / S1期
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P156 [银河系];
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摘要：
The number density and clustering properties of Lyman break galaxies (LBGs) observed at redshift z～3 are best explained by assuming that they are associated with the most massive haloes at z～3 predicted in hierarchical models of structure formation. In this paper we study, under the same assumption, how star formation and chemical enrichment may have proceeded in the LBG population. We find that gas cooling in dark haloes provides a natural regulation process. The predicted star formation rates and effective radii are consistent with observations. Still, the predicted metallicity distribution, the contribution to the total metals and the contributions to the soft X ray background and to the UV ionization background of LBGs are presented and the discussions are given.
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页码：197 / 204
页数：8
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