
%0 Journal Article
%A Argast, Dominik 
%A Samland, Markus 
%T Constraints on the Astrophysical Nature of r-Process Nucleosynthesis Sites from Inhomogeneous Chemical Evolution Models
%J Publications of the Astronomical Society of Australia
%D 2004/06/11
%V 21
%N 2
%P 161-166
%K nuclear reactions, nucleosynthesis, abundances &#8212; stars: abundances &#8212; ISM: abundances &#8212; Galaxy: abundances &#8212; Galaxy: evolution &#8212; Galaxy: halo
%R https://doi.org/10.1071/AS04021
%U https://www.publish.csiro.au/paper/AS04021 
%X We present a detailed inhomogeneous chemical evolution study that considers for the first-time neutron star mergers as major r-process sources, and compare this scenario with the ones in which lower-mass (in the range 8&#8211;10 M&odot;) or higher-mass core-collapse supernovae (with masses &#x2265;20 M&odot;) act as dominant r-process sites. We conclude that it is not possible at present to distinguish between the lower-mass and higher-mass supernovae scenarios within the framework of inhomogeneous chemical evolution. However, neutron-star mergers seem to be ruled out as the dominant r-process source, since their low rates of occurrence would lead to r-process enrichment that is not consistent with observations. 
