Ko ngā ōwehenga kua kitea o ngā isomers COM i roto i te ISM e whakarato ana i ngā mōhiotanga whai hua mō te matū me te ahupūngao o ngā hau, ā, i te mutunga, te hītori o ngā kapua ngota.
Ko te nui o te waikawa c-HCOOH i roto i te pūtake matao he 6% noa iho o te nui o te isomer c-HCOOH, ā, kāore anō kia mōhiotia tōna pūtake. I konei ka whakamāramahia e mātou te noho mai o te c-HCOOH i roto i ngā kapua ngota pouri mā te whakangaromanga me te whakaiti i te c-HCOOH me te t-HCOOH i roto i ngā huringa e uru ana te HCOOH me ngā ngota tino nui pērā i te HCO+ me te NH3.
I whakamahia e mātou he huarahi ab initio whānui hei tatau i te tohatoha pūngao pūmanawa mō ngā ara pakaru/hurihuri c-HCOOH me te t-HCOOH. I tatauhia ngā pūmau tere ā-ao me ngā tauwehenga peka i runga i te ariā āhua whakawhiti me te āhua o te whārite matua i raro i ngā āhuatanga ISM noa.
Ka whakangaromia te HCOOH i te taunekeneke ki te HCO+ i roto i te āhua hau hei hanga i ngā isomers e toru o te cation HC(OH)2+. Ka taea e ngā cation tino noa te tauhohe ki ētahi atu ngota noa i roto i te ISM, pērā i te NH3, i te taahiraa tuarua hei huri i te c-HCOOH me te t-HCOOH. Mā tēnei tikanga ka whakamāramahia te hanganga o te c-HCOOH i roto i ngā kapua ngota pouri. Mā te whakaaro ki tēnei tikanga, ko te ōwehenga o te c-HCOOH e pā ana ki te t-HCOOH he 25.7%.
Hei whakamārama i te 6% o ngā kitenga i kōrerotia, ka whakaaro mātou kia whakaarohia tētahi atu tikanga mō te whakangaromanga o te kationa HCOOH. Ko te tikanga waikawa-pūtake raupapa (SAB) e whakaarohia ana i roto i tēnei mahi e uru ana ki tētahi tukanga tere o ngā ngota e tino kitea ana i roto i te ISM.
Nō reira, tera pea ka pāngia te HCOOH e te whakawhiti i whakaarohia e mātou i raro i ngā āhuatanga kapua ngota pōuri. He huarahi hou tēnei i roto i te isomerism o ngā ngota waro i roto i te ISM, e ngana ana pea ki te whakamārama i ngā whanaungatanga i waenga i ngā isomer o ngā ngota waro e kitea ana i roto i te ISM.
John Garcia, Isascen Jimenez-Serra, Jose Carlos Colchado, Germaine Morpeceres, Antonio Martinez-Henares, Victor M. Rivera, Laura Corzi, Jesus Martin-Painde
Kaupapa: Ahupūngao Matakite o te Ao (astro-ph.GA), Ahupūngao Matū (physical.chem-ph) I whakahuatia ko: arXiv:2301.07450 [astro-ph.GA] (tēnei putanga rānei arXiv:2301.07450v1 [astro-ph.GA] ) Hītori tuku nā: Juan Garcia de la Concepción [v1] Wenerei 18 Hanuere 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450 Ahupūngao Matakite, matū matakite
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