Matches in SemOpenAlex for { <https://semopenalex.org/work/W2736616513> ?p ?o ?g. }
- W2736616513 abstract "We study the impact of the neutron star binaries' (NSBs) natal kick distribution on the Galactic r-process enrichment. We model the growth of a Milky Way type halo based on N-body simulation results and its star formation history based on multi epoch abundance matching techniques. We consider the NSBs that merge well beyond the galaxy's effective radius ($>2times R_mathrm{eff}$) do not contribute to Galactic r-process enrichment. Assuming a power-law delay-time distribution (DTD) function ($propto t^{-1}$) with $t_mathrm{min}=30$ Myr for binaries' coalescence timescales, and an exponential profile for their natal kick distribution with an average value of 180 km s$^{-1}$, we show that up to $sim$ 40% of all formed NSBs do not contribute to r-process enrichment by $z=0$, either because they merge far from the galaxy at a given redshift (up to $sim$ 25%) or have not yet merged by today ($sim$15%). Our result is largely insensitive to the details of the DTD function. Assuming a constant coalescence timescale of 100 Myr well approximates the adopted DTD with 30% of the NSBs not contributing to r-process enrichment. Our results, although rather dependent on the adopted natal kick distribution, represent a first step towards estimating the impact of natal kicks and DTD functions on r-process enrichment of galaxies that would need to be incorporated in the hydrodynamical simulations." @default.
- W2736616513 created "2017-07-31" @default.
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- W2736616513 date "2017-07-26" @default.
- W2736616513 modified "2023-09-24" @default.
- W2736616513 title "On the impact of neutron star binaries’ natal-kick distribution on the Galactic r-process enrichment" @default.
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- W2736616513 doi "https://doi.org/10.1093/mnras/stx1897" @default.
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