SIMBAD references

1999ApJ...511L..33I - Astrophys. J., 511, L33-L36 (1999/January-3)

Enrichment of the r-process element europium in the galactic halo.

ISHIMARU Y. and WANAJO S.

Abstract (from CDS):

We investigate the enrichment of europium, as a representative of r-process elements, in the Galactic halo. In present chemical evolution models, stars are assumed to be formed through shock processes by supernovae (SNe). The enrichment of the interstellar medium is calculated by a one-zone approach. The observed large dispersions in [Eu/Fe] for halo stars, converging with increasing metallicity, can be explained with our models. In addition, the mass range of SNe for the r-process site is constrained to be either stars of 8-10 or ≳30 M☉.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Evolution - Galaxy: Halo - Nuclear Reactions, Nucleosynthesis, Abundances - Stars: Abundances - Stars: Population II - Stars: Supernovae: General

Simbad objects: 6

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