Quasar Metal Abundance and FIR Luminosity

Details Quasar Metal Abundance and FIR Luminosity Quasar Metal Abundance and FIR Luminosity

2009-01-27

arxiv.org/abs/0901.4300v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

3 pages, 1 figure, to appear in the proceedings of "The Starburst-AGN Connection Conference", Shanghai, China, 27 Oct - 1 Nov

Scientific paper

We compare the metallicities in high-redshift quasars to the star formation rates (SFR) in their host galaxies using measurements of broad emission lines and far-infrared (FIR) luminosities. The FIR emission indicates the level of ongoing massive starbursts in the galaxy, whereas the abundance of metals in the gas surrounding the quasar indicates the amount of star formation which occurred before the visible quasar phase began. The results of this study can be used to constrain the late stages of starburst-quasar evolution. We detect high metallicities throughout the sample, up to several times solar, confirming that star formation must have begun before the visible quasar phase. However, we do not detect a trend in metallicity versus current SFR.

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