Imilinganiselo ebonwayo yee-COM isomers kwi-ISM inika ulwazi oluxabisekileyo malunga nekhemistri kunye nefiziksi yeegesi, kwaye ekugqibeleni, imbali yamafu eemolekyuli.
Umxholo we-c-HCOOH acid kwi-cold core yi-6% kuphela yomxholo we-c-HCOOH isomer, kwaye imvelaphi yayo ayaziwa. Apha sichaza ubukho be-c-HCOOH kumafu amnyama eemolekyuli ngokutshatyalaliswa nokunciphisa i-c-HCOOH kunye ne-t-HCOOH ngexesha lemijikelo ebandakanya i-HCOOH kunye neemolekyuli ezininzi kakhulu ezifana ne-HCO+ kunye ne-NH3.
Sisebenzise indlela eyandisiweyo ye-ab initio ukubala ukusasazwa kwamandla okunokwenzeka kweendlela ze-c-HCOOH kunye ne-t-HCOOH zokuqhekeka/ukujikeleza. Ii-Global rate constants kunye nezinto ezidibanisayo zibalwe ngokusekelwe kwithiyori yesimo sotshintsho kunye nefom ye-master equation phantsi kweemeko eziqhelekileyo ze-ISM.
I-HCOOH iyatshatyalaliswa xa isebenzisana ne-HCO+ kwisigaba segesi ukuze yenze ii-isomers ezintathu ze-HC(OH)2+ cation. Ezona cation ziqhelekileyo zinokusabela nezinye iimolekyuli eziqhelekileyo kwi-ISM, njenge-NH3, kwinyathelo lesibini lokuguqula i-c-HCOOH kunye ne-t-HCOOH. Le ndlela ichaza ukwakheka kwe-c-HCOOH kumafu amnyama eemolekyuli. Xa kujongwa le ndlela, umlinganiselo we-c-HCOOH xa uthelekiswa ne-t-HCOOH yayiyi-25.7%.
Ukuchaza i-6% yeziganeko ezibonisiweyo, sicebisa ukuba siqwalasele indlela eyongezelelweyo yokutshatyalaliswa kwe-HCOOH cation. Indlela ye-acid-base (SAB) elandelelanayo ecetywayo kulo msebenzi ibandakanya inkqubo ekhawulezayo yee-molecules ezixhaphake kakhulu kwi-ISM.
Ngoko ke, i-HCOOH inokwenzeka ukuba idlule kutshintsho esilucebisileyo phantsi kweemeko zelifu elimnyama leemolekyuli. Le yindlela entsha ngaphakathi kwe-isomerism yeemolekyuli ze-organic kwi-ISM, enokuzama ukuchaza ubudlelwane phakathi kwee-isomers zeemolekyuli ze-organic ezifumaneka kwi-ISM.
John Garcia, Isascen Jimenez-Serra, Jose Carlos Colchado, Germaine Morpeceres, Antonio Martinez-Henares, Victor M. Rivera, Laura Corzi, Jesus Martin-Painde
Izihloko: I-Galactic Astrophysics (astro-ph.GA), I-Chemical Physics (physical.chem-ph) Icatshulwe ngolu hlobo: arXiv:2301.07450 [astro-ph.GA] (okanye olu hlobo arXiv:2301.07450v1 [astro-ph.GA] ) Imbali yokuzibophelela ngu: Juan Garcia de la Concepción [v1] NgoLwesithathu, umhla we-18 kweyoMqungu 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450 I-Astrobiology, i-astrochemistry
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