Chiral selection, isotopic abundance shifts, and autocatalysis of meteoritic amino acids

The discovery of amino acids in meteorites has presented two clues to the origin their processing subsequent formation: a slight preference for left-handedness some them, and isotopic anomalies constituent atoms. In this article we present theoretical results from Supernova Neutrino Amino Acid Processing (SNAAP) model, which uses electron anti-neutrinos magnetic fields source objects such as supernovae or colliding neutron stars selectively destroy one acid chirality create abundance shifts. For plausible anti-neutrino fluxes, non-zero, positive enantiomeric excesses, $ee$s, defined be relative left/right asymmetry an population, are reviewed acids, conditions suggested that would produce $ee>0$ all $\alpha$-amino acids. relatively high energy $ee$s inevitably also anomalies. A nuclear reaction network was developed describe reactions resulting them nuclides meteorites. At similar assumed recombination detritus interactions is shown appreciable qualitative agreement with those observed D/$^1$H $^{15}$N/$^{14}$N. $^{13}$C/$^{12}$C predicted small, observed. Autocatalysis may necessary any model largest This allows constraints original SNAAP relaxed, increasing probability meteoroid survival sites where possible. These have obvious implications life on Earth.