RT info:eu-repo/semantics/article
T1 Synthesis of Formamide and Related Organic Species in the Interstellar Medium via Chemical Dynamics Simulations
A1 Spezia, Riccardo
A1 Jeanvoine, Yannick
A1 Hase, William L.
A1 Song, Kihyung
A1 Largo Cabrerizo, Antonio
K1 Astrobiología
K1 Astroquímica
K1 Moléculas
AB We show, by means of direct dynamics simulations, how it is possible to define possible reactants and mechanisms leading to the formation of formamide in the interstellar medium. In particular, different ion-molecule reactions in the gas phase were considered: NH3OH+, NH2OH{}2+, H2COH+, and NH4 + for the ions and NH2OH, H2CO, and NH3 for the partner neutrals. These calculations were combined with high level ab initio calculations to investigate possible further evolution of the products observed. In particular, for formamide, we propose that the NH2OH{}2+ + H2CO reaction can produce an isomer, NH2OCH{}2+, that, after dissociative recombination, can produce neutral formamide, which was observed in space. The direct dynamics do not pre-impose any reaction pathways and in other reactions, we did not observe the formation of formamide or any possible precursor. On the other hand, we obtained other interesting reactions, like the formation of NH2CH{}2+. Finally, some radiative association processes are proposed. All of the results obtained are discussed in light of the species observed in radioastronomy.
PB American Astronomical Society
SN 0004-637X
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/22514
UL http://uvadoc.uva.es/handle/10324/22514
LA eng
NO The Astrophysical Journal, Volume 826, Issue 2, 8 p. (2016)
NO Producción Científica
DS UVaDOC
RD 28-dic-2024