Ba rapports observés ya ba isomères COM na ISM epesaka ba informations ya valeur na oyo etali chimie na physique ya ba gaz pe, na suka, histoire ya ba nuages ​​moléculaires.
Contenu ya acide c-HCOOH na kati ya noyau froid ezali kaka 6% ya contenus ya isomère c-HCOOH, mpe origine na yango eyebani te. Awa tozali kolimbola bozali ya c-HCOOH na mapata ya moléculaire ya molili na kobebisa mpe kokitisa c-HCOOH mpe t-HCOOH na tango ya ba cycles oyo esangisi HCOOH mpe ba molécules ebele mingi lokola HCO+ mpe NH3.
Tosalelaki approche ab initio extendue pona ko calculer distribution potentielle ya énergie pona ba voies ya rupture/cyclage ya c-HCOOH na t-HCOOH. Ba constantes ya taux mondial na ba facteurs ya branchement e calculer na base ya théorie ya état de transition na forme ya équation maître na conditions typiques ISM.
HCOOH ebebisamaka na interaction na HCO+ na phase gaz mpo na kosala ba isomères misato ya cation HC(OH)2+. Ba cations oyo emonanaka mingi ekoki kosala réaction na ba molécules mosusu oyo emonanaka mingi na ISM, lokola NH3, na étape ya mibale mpo na kobongola c-HCOOH mpe t-HCOOH. Mecanisme oyo elimboli formation ya c-HCOOH na ba nuages ​​moléculaires ya molili. Soki tozwi mecanisme oyo na makanisi, proportion ya c-HCOOH par rapport na t-HCOOH ezalaki 25,7%.
Pona kolimbola 6% ya ba observations oyo elobami, to proposer ko considérer mécanisme ya kobakisa pona déstruction ya cation HCOOH. Mecanisme acide-base séquentiel (SAB) oyo e proposer na mosala oyo esangisi procédé ya mbangu ya ba molécules oyo emonanaka mingi na ISM.
Na yango, HCOOH ekoki kosala transition oyo to proposaki na conditions ya mapata moléculaire ya molili. Oyo ezali approche ya sika na kati ya isomérisme ya ba molécules organiques na ISM, oyo ekoki komeka kolimbola ba relation entre ba isomères ya ba molécules organiques oyo ezwami na ISM.
John Garcia, Isascen Jiménez-Serra, José Carlos Colchado, Germaine Morpeceres, Antonio Martinez-Henar, Victor M. Rivera, Laura Corzi, Yesu Martin-Painde, baye bayebani mingi mpo na kozala na bomoi ya malamu
Ba sujets: Astrophysique galactique (astro-ph.GA), Physique chimique (physical.chem-ph) Etangami lokola: arXiv:2301.07450 [astro-ph.GA] (to version oyo arXiv:2301.07450v1 [astro-ph.GA] ) Histoire ya komipesa na: Juan Garcia de la Concepción [v1] Mercredi 18 janvier 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450 Astrobiologie, astrochimie
Co-fondateur ya SpaceRef, membre ya Explorers Club, membre ya kala ya NASA, membre ya équipe ya terrain, mopanzi sango ya spatial mpe astrobiologie mpe momati na kokima.