Kuwanda kweCOM isomers kwakaonekwa muISM kunopa ruzivo rwakakosha nezvekemikari nefizikisi yemagasi uye, pakupedzisira, nhoroondo yegore remamorekuru.
Zviri mu c-HCOOH acid mu cold core i6% chete yehuwandu hwe c-HCOOH isomer, iyo mavambo ayo asati azivikanwa. Pano tinotsanangura kuvapo kwe c-HCOOH mumakore matema emamorekuru nekuparadzwa uye kupesana nekuumbwa kwe c-HCOOH uye t-HCOOH panguva yekufamba kwe HCOOH nemamorekuru akawanda akadai seHCO+ neNH3.
Takashandisa nzira yepamusoro ye ab initio kuverenga kugoverwa kwesimba kunogona kuitwa kwe c-HCOOH uye t-HCOOH cyclic breakdown/formation pathways. Global rate constants uye branching factors zvakaverengerwa zvichibva pa transition state theory uye chimiro che master equation pasi pemamiriro ezvinhu akajairika e ISM.
Kuparadzwa kweHCOOH nekuita neHCO+ muchikamu chegasi kunotungamira kuma isomers matatu eHC(OH)2+ cation. Macations akajairika anogona kuita pamwe nemamwe mamorekuru eISM akajairika akadai seNH3 mudanho rechipiri kuti adzokere ku c-HCOOH ne t-HCOOH. Iyi nzira inotsanangura kuumbwa kwe c-HCOOH mumakore matema emamorekuru. Tichifunga nezve nzira iyi, chikamu che c-HCOOH chichienzaniswa ne t-HCOOH chaive 25.7%.
Kuti titsanangure 6% yakaonekwa, tinokurudzira kufunga nezvemamwe maitiro ekuparadzwa kweHCOOH cation. Maitiro e sequential acid-base (SAB) anotsanangurwa mubasa iri anosanganisira maitiro ekukurumidza emamorekuru akajairika muISM.
Saka, HCOOH ingangove ichichinja sezvatakakurudzira pasi pemamiriro erima emamorekuru. Iyi inzira itsva mukati me isomerization yemamorekuru eorganic muISM, zvichida kuedza kutsanangura hukama huripo pakati pemaisomers emamorekuru eorganic anowanikwa muISM.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpeceres, Antonio Martinez-Henares, Victor M. Rivilla, Laura Colzi, Jesus Martin-Painted
Musoro: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physics.chem-ph) Yakataurwa se: arXiv:2301.07450 [astro-ph.GA] (kana iyi vhezheni arXiv:2301.07450v1 [astro-ph.GA] ) Nhoroondo yekuzvipira na: Juan Garcia de la Concepción [v1] Chitatu 18 Ndira 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450Astrobiology, astrochemistry
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