Rabon 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 abun da ke cikin isomer c-HCOOH, kuma har yanzu ba a san asalinsa ba. A nan mun bayyana kasancewar c-HCOOH a cikin gajimare masu duhu ta hanyar lalata da rage c-HCOOH da t-HCOOH a lokacin zagayowar da suka shafi HCOOH da ƙwayoyin halitta masu yawa kamar HCO+ da NH3.
Mun yi amfani da hanyar ab initio mai tsawo don ƙididdige yiwuwar rarraba makamashi don hanyoyin rushewa/hawa-hawa na 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.
HCOOH yana lalacewa idan aka yi mu'amala da HCO+ a cikin yanayin iskar gas don samar da isomers guda uku na cation na HC(OH)2+. Cations mafi yawan lokuta na iya yin aiki tare da sauran ƙwayoyin halitta na yau da kullun a cikin ISM, kamar NH3, a mataki na biyu don canza c-HCOOH da t-HCOOH. Wannan tsari yana bayanin samuwar c-HCOOH a cikin gajimare masu duhu na ƙwayoyin 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% na abubuwan da aka lura da su, muna ba da shawarar yin la'akari da ƙarin hanyar da za a bi don lalata cation na HCOOH. Tsarin acid-base (SAB) mai tsari da aka gabatar a cikin wannan aikin ya ƙunshi tsarin ƙwayoyin halitta cikin sauri wanda ya zama ruwan dare gama gari a cikin ISM.
Saboda haka, HCOOH zai iya fuskantar sauyin da muka gabatar a ƙarƙashin yanayin girgije mai duhu. Wannan wata sabuwar hanya ce a cikin isomerism na ƙwayoyin halitta a cikin ISM, wanda zai iya ƙoƙarin bayyana alaƙar da ke tsakanin isomers na ƙwayoyin halitta da ake samu a cikin ISM.
John Garcia, Ezraquen Jimenez-Serra, Jose Carlos Colchado, Germaine Morpeceres, Antonio Martinez-Henares, Victor M. Rivera, Laura Corzi, Jesus Martin-Painde
Batutuwa: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physical.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/2301.07450 Astrobiology, ilmin taurari
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