Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-01-11
Ap. J. 449 (1995) 140
Astronomy and Astrophysics
Astrophysics
Revtex 15 pages, 2 ps figures available at ftp://astro.queensu.ca/pub/shi/, or at http://astro.queensu.ca/~shi/, or by reque
Scientific paper
10.1086/176039
Observations show that there is significant clustering of QSO metal absorption lines within the range of velocity dispersion between 200km/sec and 600 km/sec. With a reasonable supernova rate, it is shown that high velocity gases driven by SNe and/or strong stellar winds could explain the clustered absorptions, provided that QSO metal-line absorbers are galactic halos or dwarf galaxies. Rich clusters of galaxies, on the other hand, cannot yield the observed clustering of QSO metal absorption lines.
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