Astrochemistry

Explaining the Variations in Isotopic Ratios in Meteoritic Amino Acids

By Keith Cowing
Press Release
astro-ph.EP
May 12, 2020
Filed under
Explaining the Variations in Isotopic Ratios in Meteoritic Amino Acids
Amino Acid
WIkipedia

Measurements of the isotopic abundances in meteoritic amino acids have found enhancements of 2H/H, 15N/14N, and 13C/12C in the amino acids in the meteorites studied.

We show that they are consistent with the processing of the constituents of the meteorites by electron anti-neutrinos that would be expected from a core-collapse supernova or neutron-star merger. Using theoretical electron anti-neutrino cross sections we are able to predict these isotopic ratio variations depending on the time-integrated anti-neutrino flux at the site where the amino acids were processed.

Michael A. Famiano, Richard N. Boyd, Toshitaka Kajino, Satoshi Chiba, Yirong Mo, Takashi Onaka, Toshi Suzuki

Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Biological Physics (physics.bio-ph); Space Physics (physics.space-ph)
Cite as: arXiv:2005.05540 [astro-ph.EP] (or arXiv:2005.05540v1 [astro-ph.EP] for this version)
Submission history
From: Michael Famiano [
[v1] Tue, 12 May 2020 04:11:54 UTC (648 KB)
https://arxiv.org/abs/2005.05540
Astrobiology, Astrochemistry

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