A Possible Origin of the High Metallicity in the Nuclei of Massive Galaxies and Quasars

Details A Possible Origin of the High Metallicity in the Nuclei of Massive Galaxies and Quasars A Possible Origin of the High Metallicity in the Nuclei of Massive Galaxies and Quasars

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..367m&link_type=abstract

Astronomy Reports, vol. 48, Issue 5, p.367-373

Astronomy and Astrophysics

Astronomy

1

Scientific paper

According to current observations, the relative abundance of gas-phase metals in distant quasars with ages of only ˜109 yr (z˜5) can be appreciably higher than the solar abundance. We show that there are two main ways to explain the high metallicity of these galactic nuclei: a high gas density in the central regions, or an increase in the minimum masses of forming stars to several solar masses. The results of numerical modeling confirm this conclusion.

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