Isotopic Signatures of Presolar Materials in Interplanetary Dust

Details Isotopic Signatures of Presolar Materials in Interplanetary Dust Isotopic Signatures of Presolar Materials in Interplanetary Dust

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ssrv..106..155m&link_type=abstract

Space Science Reviews, v. 106, Issue 1, p. 155-172 (2003).

Physics

29

Scientific paper

Interplanetary dust particles collected in the stratosphere frequently exhibit enrichments in deuterium (D) and 15N relative to terrestrial materials. These effects are most likely due to the preservation of presolar interstellar materials. While the elevated D/H ratios probably resulted from mass fractionation during chemical reactions at very low < 100 K temperatures, the origin of the N isotopic anomalies remains unresolved. The bulk of the N-bearing material may have obtained its isotopic signatures from low temperature chemistry, but a nucleosynthetic origin is also possible.

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