Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...730l..14k&link_type=abstract
The Astrophysical Journal Letters, Volume 730, Issue 2, article id. L14 (2011).
Astronomy and Astrophysics
Astronomy
12
Galaxies: Abundances, Galaxies: Evolution, Quasars: Absorption Lines, Stars: Abundances, Stars: Population Iii, Supernovae: General
Scientific paper
We show that the recently observed elemental abundance pattern of the carbon-rich metal-poor damped Lyα (DLA) system is in excellent agreement with the nucleosynthesis yields of faint core-collapse supernovae of primordial stars. The observed abundance pattern is not consistent with the nucleosynthesis yields of pair-instability supernovae. The DLA abundance pattern is very similar to that of carbon-rich extremely metal-poor (EMP) stars, and the contributions from low-mass stars and/or binary effects should be very small in DLAs. This suggests that chemical enrichment by the first stars in the first galaxies is driven by core-collapse supernovae from ~20 to 50 M sun stars and also supports the supernova scenario as the enrichment source of EMP stars in the Milky Way Galaxy.
Kobayashi Chiaki
Nomoto Ken'ichi
Tominaga Nozomu
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