@inproceedings{75517b4fa84b42669f9c63abf552c1f1,
title = "On the origin of high-density graphite grains from the murchison meteorite",
abstract = "The origin of high-density (2.10 - 2.20 g/cm3) graphite grains from the Murchison meteorite is discussed. Carbon isotopic distributions of grains from the fractions KFB1 (2.10 - 2.15 g/cm3) and KFC1 (2.15 - 2.20 g/cm3) are quite similar, having a pronounced peak around 400 - 630. From comparison with model calculations of asymptotic giant branch (AGB) stars we conclude that the grains in the peak most likely formed in low-mass (1.5, 2 and 3M⊙) lowmetallicity (Z=3×10-3 for 1.5, 2 and 3M⊙, Z=6×10-3 for 3M ⊙ only) stars. s-Process Kr in KFC1 is best explained with 5M⊙ stars of solar and/or half-solar metallicities.",
keywords = "AGB stars, Dust; Meteorites, Presolar Grains, s-process",
author = "Sachiko Amari and Ernst Zinner and Roberto Gallino",
year = "2012",
doi = "10.1063/1.4763373",
language = "English",
isbn = "9780735410961",
series = "AIP Conference Proceedings",
pages = "57--62",
booktitle = "Origin of Matter and Evolution of Galaxies 2011",
note = "International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 ; Conference date: 14-11-2011 Through 17-11-2011",
}