Comets and prebiotic chemistry:: The volatile component

被引：0

作者：

Despois, D ^{[1
]}

Crovisier, J ^{[1
]}

Bockelée-Morvan, D ^{[1
]}

Biver, N ^{[1
]}

机构：

[1] Observ Bordeaux, OASU, F-33270 Floirac, France

来源：

PROCEEDINGS OF THE SECOND EUROPEAN WORKSHOP ON EXO-ASTROBIOLOGY | 2002年 / 518卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Comets may deliver simple (HCN, H(2)CO...) or more complex (amino acids, nuclear bases...) molecules important for prebiotic chemistry on the early Earth. We present a (provisional) reference list of 27 cometary volatile abundances (plus 8 upper limits), and discuss its validity limits. Recent results are detailed. Glycine upper limit is not stringent (<0.5% H(2)O) and says nothing on its possible presence in organic refractories. Comet contribution to Earth oceans appears low (<10%). Future work needed to improve our appreciation of the importance of comets for prebiotic chemistry is outlined.

引用

页码：123 / 127

页数：5

共 33 条

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