Formation of formaldehyde through methanol-ice-mantle (CH3OH)10bombardment by OH+cation
Autor
Inostroza-Pino, Natalia
MacLeod-Carey, Desmond
Heyser, Cristopher
Mardones, Diego
Espinoza, Carlos
Ge, Jixing
Resumen
Context. Formaldehyde H2CO was the first organic polyatomic molecule discovered in the interstellar medium to have been detected in a variety of sources. However, pathways to synthesize this molecule under interstellar conditions have yet to be discussed. Aims. We carried out a systematic study to analyze the chemical processes that can explain the H2CO formation mechanism toward a decamer of methanol (CH3OH)10 as target material to mimic an ice mantle bombarded by an OH+ cation. Methods. We performed Born-Oppenheimer (ab initio) molecular dynamics simulations to obtain the formation mechanisms of complex organic molecules (COMs) such as formaldehyde H2CO and its HCOH isomer. Results. We found that CH2OH+ and CH2(OH)2 are the main precursors to form H2CO and HCOH. We discuss its formation mechanisms and the astrophysical implications in star-forming regions. These processes are likely relevant to the production of COMs.
Colecciones
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Article
Formation pathways of complex organic molecules: OH•projectile colliding with methanol ice mantle (CH3OH)10 (2020)
Inostroza-Pino, Natalia; Mardones, Diego; Ge, Jixing J.X.; MacLeod-Carey, Desmond (EDP Sciences, 2020-09-01)In this article, we simulated the collisions of an OH• projectile impacting on a methanol cluster formed by ten units of methanol to mimic an ice mantle (CH3OH)10. The chemical processes occurring after the impact were ... -
Article
Methanediol CH2(OH)2and hydroxymethyl CH2OH+: key organic intermediates on the path to complex organic molecules (2024)
Heyser Valencia, Cristopher; Inostroza-Pino, Natalia (EDP Sciences, 2022)Context. Ab initio molecular dynamics simulations were carried out to study the formation pathways to complex organic molecules when a OH+ projectile hit an interstellar dust grain covered only by methanol molecules. The ... -
Article
Formation of complex organic molecules in ice mantles: An ab initio molecular dynamics study (2020)
Inostroza N.; Mardones D.; Cernicharo J.; Zinnecker H.; Ge J.; Aria N.; Fuentealba P.; Cardenas C. (EDP Sciences, 2019)