P117 Ningqiang炭素質コンドライトの希ガス組成に基づいたプレソーラー粒子の存在度(ポスター:一般,ポスターセッション1)

概要

論文の詳細を見る
Signatures of noble gas compositions in meteorites reflect the history of materials and there are a lot of noble-gas components. Exotic gases are contained in presolar grains such as diamond, graphite and silicon carbide (SiC). We analyzed mineralogy and noble gas compositions in acid residue of Ningqiang charbonaceous chondrite and discussed the precursor materials of meteorite parent bodies. Neon, Krypton and Xeon in acid residue were dominated by HL component. S component was not observed in all noble gas elements. These are consistent with that CV chondrite. Our results suggest that the parent body of Ningqiang had contained presolar grains that have similar ratio of diamond, graphite and SiC with CV chondrite.
日本惑星科学会の論文
2008-11-01