The Effect of Abundance Variations on Estimates of the Densities of Broad-Line Region Clouds in Quasars

Details The Effect of Abundance Variations on Estimates of the Densities of Broad-Line Region Clouds in Quasars The Effect of Abundance Variations on Estimates of the Densities of Broad-Line Region Clouds in Quasars

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...521l..91s&link_type=abstract

The Astrophysical Journal, Volume 521, Issue 2, pp. L91-L94.

Astronomy and Astrophysics

Astronomy

11

Galaxies: Quasars: General

Scientific paper

There has been a long-standing discrepancy between the densities deduced from studies of the variability of quasar emission lines and those inferred from standard photoionization analyses. We have found that the higher metal abundances now believed to be present in most quasars lead to the higher densities being predicted by photoionization models. We explain why this is so.

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