Consequences of H II region models for absorption systems in the quasar spectra

Details Consequences of H II region models for absorption systems in the quasar spectra Consequences of H II region models for absorption systems in the quasar spectra

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...444..643s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 444, no. 2, p. 643-646

Astronomy and Astrophysics

Astrophysics

4

Absorption Spectra, Astronomical Models, Background Radiation, H Ii Regions, Quasars, Angular Distribution, Ionization, Line Spectra, Lyman Alpha Radiation, Massive Stars, Power Spectra, Star Formation

Scientific paper

We have studied various consequences of the hypothesis that H II regions around massive stars give rise to metal-line absorption systems seen in the quasar spectra. Based on the necessary star formation rate in the absorbing galaxy and its expected surface brightness in Ly alpha, as well as on the ratio of the expected number of low-ionization to high-ionization absorption systems, we conclude that H II regions can at most account for 10% of the observed absorption systems in quasar spectra.

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