On the origin of some QSO absorption lines

Details On the origin of some QSO absorption lines On the origin of some QSO absorption lines

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...311..610y&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 311, Dec. 15, 1986, p. 610-616. Research supported by the University of Chi

Astronomy and Astrophysics

Astrophysics

142

Absorption Spectra, Cosmic Gases, Dwarf Galaxies, Line Shape, Quasars, Astronomical Spectroscopy, Galactic Evolution, Magellanic Clouds, Mass Distribution, Metallicity

Scientific paper

Some QSO absorption-line systems (QSOALSs) may arise when a QSO sight line intersects a Magellanic-type irregular galaxy (i.e., a gas-rich dwarf). Much of the complexity in the line profiles of metals can be naturally explained in this manner. The frequency of occurrence of QSOALSs then requires that much of the mass of modern galaxies once resided in a halo of gas-rich dwarfs (at the epoch of QSOALS formation).

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