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• W2981648669 endingPage "11" @default.
• W2981648669 startingPage "11" @default.
• W2981648669 abstract "Lead (Pb) is predominantly produced by the slow neutron-capture process (s process) in asymptotic giant branch (AGB) stars. In contrast to significantly enhanced Pb abundances predicted by low-mass, low-metallicity AGB-models, observations of Magellanic post-AGB stars show incompatibly low Pb abundances. Observations of carbon-enhanced metal-poor (CEMP) stars whose s-process enrichments are accompanied by heavy elements traditionally associated with the rapid neutron-capture process (r process) have raised the need for a neutron-capture process operating at neutron densities intermediate to the s and r process: the so-called i process. We study i-process nucleosynthesis with single-zone nuclear-network calculations. Our i-process models can explain the heavy-element abundance patterns measured in Magellanic post-AGB stars including their puzzlingly low Pb abundances. Furthermore, the heavy-element enhancements in the post-AGB and CEMP-i stars, particularly their Pb abundance, allow us to characterise the neutron densities and exposures of the i process that produced the observed abundance patterns. We find that the lower-metallicity CEMP-i stars ($left[ mathrm{Fe} / mathrm{H} right] approx -2.5$) have heavy-element abundances best matched by models with higher neutron densities and exposures ($tau > 2.0 , mathrm{mbarn}^{-1}$) compared to the higher-metallicity post-AGB stars ($left[ mathrm{Fe} / mathrm{H} right] approx -1.3$, $tau < 1.3 , mathrm{mbarn}^{-1}$). This offers new constraints and insights regarding the properties of i-process sites and demonstrates that the responsible process operates on time scales of the order of a few years or less." @default.
• W2981648669 created "2019-11-01" @default.
• W2981648669 creator A5000910476 @default.
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• W2981648669 creator A5054717161 @default.
• W2981648669 creator A5088116706 @default.
• W2981648669 date "2019-12-05" @default.
• W2981648669 modified "2023-10-03" @default.
• W2981648669 title "Learning about the Intermediate Neutron-capture Process from Lead Abundances" @default.
• W2981648669 cites W1847771812 @default.
• W2981648669 cites W1897874509 @default.
• W2981648669 cites W1898983771 @default.
• W2981648669 cites W1913098325 @default.
• W2981648669 cites W1967858187 @default.
• W2981648669 cites W1968936583 @default.
• W2981648669 cites W1970520663 @default.
• W2981648669 cites W1971108842 @default.
• W2981648669 cites W1971972731 @default.
• W2981648669 cites W1979187130 @default.
• W2981648669 cites W1981084083 @default.
• W2981648669 cites W1982038901 @default.
• W2981648669 cites W1993508468 @default.
• W2981648669 cites W2006441023 @default.
• W2981648669 cites W2011144048 @default.
• W2981648669 cites W2013927851 @default.
• W2981648669 cites W2014019250 @default.
• W2981648669 cites W2014272936 @default.
• W2981648669 cites W2021714225 @default.
• W2981648669 cites W2024743329 @default.
• W2981648669 cites W2034477498 @default.
• W2981648669 cites W2036419651 @default.
• W2981648669 cites W2054992981 @default.
• W2981648669 cites W2055516151 @default.
• W2981648669 cites W2058154111 @default.
• W2981648669 cites W2059275242 @default.
• W2981648669 cites W2065439995 @default.
• W2981648669 cites W2070722652 @default.
• W2981648669 cites W2073049721 @default.
• W2981648669 cites W2077053871 @default.
• W2981648669 cites W2087738425 @default.
• W2981648669 cites W2087818953 @default.
• W2981648669 cites W2089630383 @default.
• W2981648669 cites W2092041784 @default.
• W2981648669 cites W2093159502 @default.
• W2981648669 cites W2098156877 @default.
• W2981648669 cites W2100040774 @default.
• W2981648669 cites W2103165993 @default.
• W2981648669 cites W2104311895 @default.
• W2981648669 cites W2109126084 @default.
• W2981648669 cites W2110936200 @default.
• W2981648669 cites W2112319462 @default.
• W2981648669 cites W2114908771 @default.
• W2981648669 cites W2131999259 @default.
• W2981648669 cites W2141499127 @default.
• W2981648669 cites W2147018234 @default.
• W2981648669 cites W2148583944 @default.
• W2981648669 cites W2150399643 @default.
• W2981648669 cites W2152841611 @default.
• W2981648669 cites W2156126228 @default.
• W2981648669 cites W2165265566 @default.
• W2981648669 cites W2165418527 @default.
• W2981648669 cites W2168773231 @default.
• W2981648669 cites W2224085601 @default.
• W2981648669 cites W2258679277 @default.
• W2981648669 cites W2263849334 @default.
• W2981648669 cites W2517113413 @default.
• W2981648669 cites W2571053103 @default.
• W2981648669 cites W2591926734 @default.
• W2981648669 cites W2594620746 @default.
• W2981648669 cites W2599520289 @default.
• W2981648669 cites W2616538098 @default.
• W2981648669 cites W2761335279 @default.
• W2981648669 cites W2765207855 @default.
• W2981648669 cites W2765909478 @default.
• W2981648669 cites W2766309526 @default.
• W2981648669 cites W2891073910 @default.
• W2981648669 cites W2893163740 @default.
• W2981648669 cites W2899497983 @default.
• W2981648669 cites W2951639820 @default.
• W2981648669 cites W2952569855 @default.
• W2981648669 cites W3098211717 @default.
• W2981648669 cites W3099139528 @default.
• W2981648669 cites W3099202217 @default.
• W2981648669 cites W3099323693 @default.
• W2981648669 cites W3099824350 @default.
• W2981648669 cites W3099994048 @default.
• W2981648669 cites W3100051330 @default.
• W2981648669 cites W3100215491 @default.
• W2981648669 cites W3100329185 @default.
• W2981648669 cites W3100413376 @default.
• W2981648669 cites W3100780339 @default.
• W2981648669 cites W3101119152 @default.
• W2981648669 cites W3101653838 @default.
• W2981648669 cites W3102341392 @default.
• W2981648669 cites W3102473818 @default.
• W2981648669 cites W3102683676 @default.
• W2981648669 cites W3103311509 @default.

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