SIMBAD references

2019MNRAS.484..659Y - Mon. Not. R. Astron. Soc., 484, 659-664 (2019/March-3)

Dissociative recombination of CH2NH2+: a crucial link with interstellar methanimine and Titan ammonia.

YUEN C.H., AYOUZ M.A., BALUCANI N., CECCARELLI C., SCHNEIDER I.F. and KOKOOULINE V.

Abstract (from CDS):

Cross-sections for dissociative recombination (DR) and vibrational excitation of the CH2NH_2^+ ion in collisions with electrons are determined theoretically. The corresponding thermally averaged rate coefficients are computed and fitted to analytical formulas. The obtained DR rate coefficient is significantly smaller than the values recently employed in the photochemical models of the upper atmosphere of Titan, which has an important impact on the models that aim to reproduce the Titan ammonia abundance. On the other hand, the present results support the astrophysical models reproducing the abundance of the methanimine (CH2NH) detected in massive star formation regions. In these models, the CH2NH_2^+ DR is a major route of formation of this molecule with a high prebiotic potential.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astrochemistry - molecular data - molecular processes - scattering - planets and satellites: atmospheres - ISM: molecules

Simbad objects: 3

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2020.01.20-07:20:26

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