A Census of Sun's Ancestors and their Contributions to the Solar System Chemical Composition
F. Fiore, F. Matteucci, E. Spitoni, M. Molero, P. Salucci, D. Romano,, A. Vasini

TL;DR
This paper models the chemical evolution of the Milky Way to estimate the contributions of various stellar types to the Solar System's composition, providing insights into star death rates and the origins of Solar System material.
Contribution
It introduces a revised two-infall model to accurately quantify star death contributions and the number of Sun-like stars formed before the Solar System.
Findings
93% of contributing stars are white dwarfs from 0.8-8 M_sun
5.24% are neutron stars from supernovae
0.73% are black holes from supernovae
Abstract
In this work we compute the rates and numbers of different types of stars and phenomena (supernovae, novae, white dwarfs, merging neutron stars, black holes) that contributed to the chemical composition of the Solar System. This process is called "chemical evolution". In particular, we analyse the death rates of stars of all masses, dying either quiescently or explosively. These rates and total star numbers are computed in the context of a revised version of the two-infall model for the chemical evolution of the Milky Way, which reproduces fairly well the observed abundance patterns of several chemical species, the global solar metallicity, and the current gas, stellar, and total surface mass densities. We compute also the total number of stars ever born and still alive as well as the number of stars born up to the formation of the Solar System with a mass and metallicity like the Sun.…
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Taxonomy
TopicsAstro and Planetary Science
