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Heavy Element Abundances and Dust Depletions in the Host Galaxies of Three Gamma-Ray Bursts
ASTROPHYSICAL JOURNAL, no. 2 (2003): 638-646
摘要
We have derived the column densities of heavy elements in three gamma-ray burst (GRB) optical transients, associated with the circumburst or interstellar medium ( ISM) of the host galaxy. In comparison with the same elements observed in damped Lyalpha (DLA) systems along QSO sight lines, we find evidence for much higher column densities o...更多
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