Rabon yawan isomers na COM da aka lura a cikin ISM yana ba da bayanai masu mahimmanci game da sinadarai da kimiyyar lissafi na iskar gas, kuma a ƙarshe, tarihin gajimare na kwayoyin halitta.
Abubuwan da ke cikin c-HCOOH acid a cikin tsakiyar sanyi shine kashi 6% kawai na adadin isomer c-HCOOH, wanda har yanzu ba a san asalinsa ba. A nan mun bayyana kasancewar c-HCOOH a cikin gajimare masu duhu ta hanyar lalata da hana samuwar c-HCOOH da t-HCOOH a lokacin tsarin zagayowar da ya shafi HCOOH da ƙwayoyin halitta masu yawa kamar HCO+ da NH3.
Mun yi amfani da wata hanyar ab initio mai ci gaba don ƙididdige yiwuwar rarraba makamashi na hanyoyin rushewa/samfurin c-HCOOH da t-HCOOH. An ƙididdige ma'aunin ƙimar duniya da abubuwan da ke ba da gudummawa bisa ga ka'idar yanayin sauyawa da kuma nau'in master equation a ƙarƙashin yanayin ISM na yau da kullun.
Rushewar HCOOH ta hanyar amsawa da HCO+ a cikin yanayin iskar gas yana haifar da isomers guda uku na cation na HC(OH)2+. Cations mafi yawan lokuta na iya amsawa tare da wasu ƙwayoyin ISM na yau da kullun kamar NH3 a mataki na biyu don sake dawowa zuwa c-HCOOH da t-HCOOH. Wannan tsari yana bayanin samuwar c-HCOOH a cikin gajimare masu duhu na kwayoyin halitta. Idan aka yi la'akari da wannan tsari, rabon c-HCOOH idan aka kwatanta da t-HCOOH shine kashi 25.7%.
Domin bayyana kashi 6% da aka lura, muna ba da shawarar yin la'akari da ƙarin hanyoyin da za a bi don lalata cation na HCOOH. Tsarin acid-base (SAB) mai tsari da aka gabatar a cikin wannan aikin ya ƙunshi tsari mai sauri na ƙwayoyin halitta da suka zama ruwan dare a cikin ISM.
Saboda haka, HCOOH zai iya fuskantar canjin da muka gabatar a ƙarƙashin yanayin girgije mai duhu. Wannan wata sabuwar hanya ce ta yin amfani da isomerization na ƙwayoyin halitta a cikin ISM, mai yuwuwar ƙoƙarin bayyana alaƙar da ke tsakanin isomers na ƙwayoyin halitta da ake samu a cikin ISM.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpiceres, Antonio Martinez-Henares, Victor M. Rivilla, Laura Colzi, Jesus Martin-Painted
Maudu'i: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physics.chem-ph) An ambace shi kamar haka: arXiv:2301.07450 [astro-ph.GA] (ko wannan sigar arXiv:2301.07450v1 [astro-ph.GA]) Yi alƙawarin tarihi ta: Juan Garcia de la Concepción [v1] Laraba 18 Janairu 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450Astrobiology, ilmin taurari
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