Cov piv txwv ntawm COM isomers uas pom muaj nyob hauv ISM muab cov ntaub ntawv tseem ceeb txog chemistry thiab physics ntawm cov pa roj thiab, thaum kawg, keeb kwm ntawm cov huab molecular.
Cov ntsiab lus ntawm c-HCOOH acid nyob rau hauv lub plawv txias tsuas yog 6% ntawm qhov ntau ntawm c-HCOOH isomer, keeb kwm ntawm qhov ntawd tseem tsis tau paub. Ntawm no peb piav qhia txog qhov muaj c-HCOOH nyob rau hauv cov huab tsaus ntuj molecular los ntawm kev rhuav tshem thiab tiv thaiv kev tsim ntawm c-HCOOH thiab t-HCOOH thaum lub sijhawm ua haujlwm uas muaj HCOOH thiab cov molecules muaj ntau heev xws li HCO+ thiab NH3.
Peb siv txoj kev ab initio siab heev los xam qhov kev faib tawm lub zog ntawm c-HCOOH thiab t-HCOOH cyclic breakdown/formation pathways. Cov nqi thoob ntiaj teb tas mus li thiab cov yam ntxwv branching tau suav raws li kev hloov pauv lub xeev txoj kev xav thiab daim ntawv ntawm tus qauv tswv nyob rau hauv cov xwm txheej ISM ib txwm muaj.
Qhov kev puas tsuaj ntawm HCOOH los ntawm kev sib xyaw nrog HCO+ hauv theem roj ua rau peb lub isomers ntawm HC(OH)2+ cation. Cov cations feem ntau tuaj yeem sib xyaw nrog lwm cov ISM molecules xws li NH3 hauv kauj ruam thib ob los tsim rov qab mus rau c-HCOOH thiab t-HCOOH. Lub tshuab no piav qhia txog kev tsim c-HCOOH hauv cov huab molecular tsaus ntuj. Thaum xav txog lub tshuab no, qhov feem pua ​​ntawm c-HCOOH piv rau t-HCOOH yog 25.7%.
Txhawm rau piav qhia txog 6% uas tau pom, peb xav kom xav txog lwm cov txheej txheem rau kev rhuav tshem HCOOH cation. Cov txheej txheem acid-base (SAB) uas tau hais hauv txoj haujlwm no cuam tshuam nrog cov txheej txheem ceev ceev ntawm cov molecules uas pom ntau heev hauv ISM.
Yog li ntawd, HCOOH yuav raug hloov pauv raws li peb tau hais tseg hauv qab cov huab cua tsaus ntuj. Qhov no yog ib txoj hauv kev tshiab hauv isomerization ntawm cov organic molecules hauv ISM, tej zaum sim piav qhia txog kev sib raug zoo ntawm cov isomers ntawm cov organic molecules pom hauv ISM.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpeceres, Antonio Martinez-Henares, Victor M. Rivilla, Laura Colzi, Yexus Martin-Painted
Kawm: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physics.chem-ph) Hais txog: arXiv:2301.07450 [astro-ph.GA] (lossis qhov version no arXiv:2301.07450v1 [astro-ph.GA]) Keeb kwm cog lus los ntawm: Juan Garcia de la Concepción [v1] Hnub Wednesday 18 Lub Ib Hlis 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450Astrobiology, astrochemistry
Tus neeg koom tsim SpaceRef, ib tug tswv cuab ntawm Explorers Club, tus qub NASA, pawg neeg tuaj xyuas, tus kws sau xov xwm, tus neeg caij nkoj mus saum ntuj thiab tus kws tshawb fawb txog hnub qub, tus neeg nce roob uas xiam oob qhab.