H II regions and QSO absorption lines

Details H II regions and QSO absorption lines H II regions and QSO absorption lines

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989rmxaa..18..121v&link_type=abstract

(Universidad Nacional Autonoma de Mexico and CONACYT, Conferencia Mexicana-Texana de Astrofisica, 2nd, Mexico City, MX, Feb. 22-

Astronomy and Astrophysics

Astronomy

1

Absorption Spectra, H Ii Regions, Halos, Line Spectra, Quasars, Ionized Gases, Neutral Gases, Photoionization, Red Shift, Star Formation

Scientific paper

An analysis of high-resolution data has suggested an analogy between the metal absorption line systems of QSOs and the absorption lines of gas-rich dwarf galaxies; this analogy suggests that the metal absorption lines could have originated in the star-forming regions of the intervening galaxy. This scenario is presently analyzed in view of photoionization models for H II regions. It is assumed that the high-ionization lines are produced in an H II region of a galaxy lying along the QSO's line-of-sight, while the neutral interstellar gas can also contribute to the low ionization lines.

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