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- W2901795320 abstract "We analyzed seven presolar SiC grains of supernova origin (average diameter: 1–2 μm) with transmission electron microscopy. Five grains are polycrystalline, whereas two grains are single crystals. Individual crystal domains of polycrystalline grains are in epitaxial relationship, with two grains consisting almost entirely of twinned crystal domains. Most grains are free of inclusions (only one TiC inclusion and one iron- and nickel-rich inclusion were found in two separate grains). Almost all crystals have cubic symmetry (3C polytype), but we found hexagonal SiC (6H polytype) in two grains. The large range of crystal domain sizes (average diameter: 50–970 nm), as well as the larger fraction of noncubic SiC polytypes in supernova grains relative to SiC grains that crystallized in the winds of asymptotic giant branch (AGB) stars, suggest that SiC condensation in supernova ejecta occurs at a larger range of chemical and physical conditions, including supersaturation, than in the winds of AGB stars. Modeling condensation of SiC struggles to produce SiC grains as large as, or bigger than, observed here, if condensation of large (i.e., several μm in diameter) graphite grains is to precede that of SiC, which is suggested by the presolar grain record and published equilibrium condensation models. We propose that future models of graphite and SiC condensation in SN ejecta explore higher ejecta densities than before, as well as gas compositions that are more silicon- and carbon-rich. Furthermore, we infer that some supernova SiC grains may have formed without prior condensation of graphite from their parent gas." @default.
- W2901795320 created "2018-11-29" @default.
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- W2901795320 creator A5075498266 @default.
- W2901795320 date "2018-11-15" @default.
- W2901795320 modified "2023-09-23" @default.
- W2901795320 title "Structural Investigation of Silicon Carbide X Grains: Constraints on Condensation in Supernova Ejecta" @default.
- W2901795320 cites W1964652188 @default.
- W2901795320 cites W1966498190 @default.
- W2901795320 cites W1967560018 @default.
- W2901795320 cites W1970511825 @default.
- W2901795320 cites W1982977944 @default.
- W2901795320 cites W1992239588 @default.
- W2901795320 cites W1992526765 @default.
- W2901795320 cites W1993451446 @default.
- W2901795320 cites W1994674221 @default.
- W2901795320 cites W1997905647 @default.
- W2901795320 cites W1999941583 @default.
- W2901795320 cites W2001925634 @default.
- W2901795320 cites W2003062746 @default.
- W2901795320 cites W2004888728 @default.
- W2901795320 cites W2005002370 @default.
- W2901795320 cites W2010711862 @default.
- W2901795320 cites W2013490984 @default.
- W2901795320 cites W2019802725 @default.
- W2901795320 cites W2022287615 @default.
- W2901795320 cites W2024282527 @default.
- W2901795320 cites W2035353062 @default.
- W2901795320 cites W2041184742 @default.
- W2901795320 cites W2043076408 @default.
- W2901795320 cites W2043357560 @default.
- W2901795320 cites W2048734700 @default.
- W2901795320 cites W2052472498 @default.
- W2901795320 cites W2055095039 @default.
- W2901795320 cites W2058613813 @default.
- W2901795320 cites W2061024600 @default.
- W2901795320 cites W2064269879 @default.
- W2901795320 cites W2066340907 @default.
- W2901795320 cites W2066609488 @default.
- W2901795320 cites W2070407898 @default.
- W2901795320 cites W2073175649 @default.
- W2901795320 cites W2073177380 @default.
- W2901795320 cites W2073786102 @default.
- W2901795320 cites W2080381071 @default.
- W2901795320 cites W2082177180 @default.
- W2901795320 cites W2084441786 @default.
- W2901795320 cites W2086511276 @default.
- W2901795320 cites W2088763899 @default.
- W2901795320 cites W2091017083 @default.
- W2901795320 cites W2091537829 @default.
- W2901795320 cites W2091566248 @default.
- W2901795320 cites W2093522762 @default.
- W2901795320 cites W2098472737 @default.
- W2901795320 cites W2110177531 @default.
- W2901795320 cites W2118117548 @default.
- W2901795320 cites W2137986662 @default.
- W2901795320 cites W2150112116 @default.
- W2901795320 cites W2153098509 @default.
- W2901795320 cites W2156972334 @default.
- W2901795320 cites W2157418461 @default.
- W2901795320 cites W2160771394 @default.
- W2901795320 cites W2163130438 @default.
- W2901795320 cites W2167689711 @default.
- W2901795320 cites W2170433073 @default.
- W2901795320 cites W2241758666 @default.
- W2901795320 cites W2380638429 @default.
- W2901795320 cites W2587422644 @default.
- W2901795320 cites W2617225052 @default.
- W2901795320 cites W2617304367 @default.
- W2901795320 cites W2626828200 @default.
- W2901795320 cites W2682482753 @default.
- W2901795320 cites W2733761471 @default.
- W2901795320 cites W2752347889 @default.
- W2901795320 cites W2758651501 @default.
- W2901795320 cites W2786352272 @default.
- W2901795320 cites W3098453418 @default.
- W2901795320 cites W3102509346 @default.
- W2901795320 cites W3102696624 @default.
- W2901795320 cites W3102866885 @default.
- W2901795320 cites W3103597865 @default.
- W2901795320 cites W3104034893 @default.
- W2901795320 cites W3104410248 @default.
- W2901795320 cites W3105722037 @default.
- W2901795320 cites W3125797951 @default.
- W2901795320 cites W4235488554 @default.
- W2901795320 cites W4301386907 @default.
- W2901795320 cites W79443150 @default.
- W2901795320 doi "https://doi.org/10.3847/1538-4357/aae482" @default.
- W2901795320 hasPublicationYear "2018" @default.
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