Umlinganiselo wobuninzi obubonwayo bee-COM isomers kwi-ISM unika ulwazi oluxabisekileyo malunga nekhemistri kunye nefiziksi yeegesi, kwaye ekugqibeleni, imbali yelifu leemolekyuli.
Umxholo we-c-HCOOH acid kwi-cold core yi-6% kuphela yenani le-c-HCOOH isomer, apho imvelaphi yayo ingaziwa. Apha sichaza ubukho be-c-HCOOH kumafu amnyama eemolekyuli ngokutshatyalaliswa kunye nokuchasana nokwakheka kwe-c-HCOOH kunye ne-t-HCOOH ngexesha lenkqubo yokujikeleza equka i-HCOOH kunye neemolekyuli ezininzi kakhulu ezifana ne-HCO+ kunye ne-NH3.
Sisebenzise indlela ye-ab initio ephucukileyo ukubala ukusasazwa kwamandla okunokwenzeka kweendlela ze-c-HCOOH kunye ne-t-HCOOH ezijikelezayo/ezakhiweyo. Ii-constants zezinga lehlabathi kunye nezinto ezidibanisayo zibalwe ngokusekelwe kwithiyori yesimo sotshintsho kunye nefom ye-master equation phantsi kweemeko eziqhelekileyo ze-ISM.
Ukutshatyalaliswa kwe-HCOOH ngokuphendula nge-HCO+ kwisigaba segesi kukhokelela kwii-isomers ezintathu ze-HC(OH)2+ cation. Ezona cations ziqhelekileyo zinokusabela nezinye iimolekyuli ze-ISM eziqhelekileyo ezifana ne-NH3 kwinyathelo lesibini ukuze zibuyele kwi-c-HCOOH kunye ne-t-HCOOH. Le ndlela ichaza ukwakheka kwe-c-HCOOH kumafu amnyama eemolekyuli. Xa siqwalasela le ndlela, umlinganiselo we-c-HCOOH xa uthelekiswa ne-t-HCOOH yayiyi-25.7%.
Ukuchaza i-6% ebonweyo, sicebisa ukuba siqwalasele iindlela ezongezelelweyo zokutshatyalaliswa 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 isenokutshintsha ngendlela esiyicebisileyo phantsi kweemeko zelifu elimnyama leemolekyuli. Le yindlela entsha ngaphakathi kwe-isomerization yeemolekyuli ze-organic kwi-ISM, mhlawumbi izama ukuchaza ubudlelwane phakathi kwee-isomers zeemolekyuli ze-organic ezifumaneka kwi-ISM.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpeceres, Antonio Martinez-Henares, Victor M. Rivilla, Laura Colzi, Jesus Martin-Painted
Isihloko: I-Galactic Astrophysics (astro-ph.GA), I-Chemical Physics (physics.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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