Astronomy and Astrophysics – Astronomy
Scientific paper
May 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012apj...750l..12c&link_type=abstract
The Astrophysical Journal Letters, Volume 750, Issue 1, article id. L12 (2012).
Astronomy and Astrophysics
Astronomy
Astrochemistry, Ism: Atoms, Ism: Molecules, Methods: Laboratory
Scientific paper
Icy dust grains in space act as catalytic surfaces onto which complex molecules form. These molecules are synthesized through exothermic reactions from precursor radicals and, mostly, hydrogen atom additions. Among the resulting products are species of biological relevance, such as hydroxylamine—NH2OH—a precursor molecule in the formation of amino acids. In this Letter, laboratory experiments are described that demonstrate NH2OH formation in interstellar ice analogs for astronomically relevant temperatures via successive hydrogenation reactions of solid nitric oxide (NO). Inclusion of the experimental results in an astrochemical gas-grain model proves the importance of a solid-state NO+H reaction channel as a starting point for prebiotic species in dark interstellar clouds and adds a new perspective to the way molecules of biological importance may form in space.
Baouche Saoud
Chaabouni Henda
Congiu Emanuele
Cuppen Herma M.
Dulieu Francois
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