Metals in Star-Forming Galaxies at High Redshift

Details Metals in Star-Forming Galaxies at High Redshift Metals in Star-Forming Galaxies at High Redshift

2005-06-13

arxiv.org/abs/astro-ph/0506285v1

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figures. Invited talk given at IAU Symp. 228, From Lithium to Uranium, Paris (France), 23 - 27 May, 2005. To be pub

Scientific paper

10.1017/S1743921305006459

The chemical composition of high-redshift galaxies is an important property that gives clues to their past history and future evolution. Measuring abundances in distant galaxies with current techniques is often a challenge, and the canonical metallicity indicators can often not be applied. I discuss currently available metallicity indicators based on stellar and interstellar absorption and emission lines, and assess their limitations and systematic uncertainties. Recent studies suggest that star-forming galaxies at redshift around 3 have heavy-element abundances already close to solar, in agreement with predictions from cosmological models.

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