COM isomers dodow nsusuwii a wɔahu wɔ ISM no ma wonya nsɛm a ɛsom bo fa mframa ahorow mu nnuruyɛ ne abɔde mu nneɛma ho, na awiei koraa no, molecule mununkum no abakɔsɛm ho.
c-HCOOH acid a ɛwɔ awɔw mu no yɛ c-HCOOH isomer dodow no mu 6% pɛ, a wonnim nea efi bae. Ɛha na yɛkyerɛkyerɛ c-HCOOH a ɛwɔ molecule mununkum a ɛyɛ sum mu mu denam ɔsɛe ne anti-formation a c-HCOOH ne t-HCOOH yɛ wɔ kyinhyia nhyehyɛe a ɛfa HCOOH ne molecule a ɛdɔɔso yiye te sɛ HCO + ne NH3 ho no mu.
Yɛde ab initio kwan a ɛkɔ anim dii dwuma de buu ahoɔden a ebetumi aba wɔ c-HCOOH ne t-HCOOH cyclic breakdown/formation akwan mu no ho akontaa. Wɔgyinaa nsakraeɛ tebea nsusuiɛ ne master equation no su so buu wiase nyinaa rate constants ne branching factors no ho akontaa.
HCOOH a wɔsɛe no denam HCO+ a ɛne HCO+ yɛ adwuma wɔ gas phase no mu no ma HC(OH)2+ cation no isomers abiɛsa ba. Cations a ɛtaa ba no tumi ne ISM molecule afoforo a ɛtaa ba te sɛ NH3 yɛ adwuma wɔ anammɔn a ɛto so abien mu ma ɛsan yɛ c-HCOOH ne t-HCOOH. Saa adwinnade yi kyerɛkyerɛ sɛnea c-HCOOH ba wɔ molecule mununkum a ɛyɛ sum mu no mu. Sɛ yɛhwɛ saa kwan yi a, c-HCOOH fã a ɛwɔ t-HCOOH ho no yɛ 25.7%.
Sɛ yɛbɛkyerɛkyerɛ 6% a yɛahu no mu a, yɛhyɛ nyansa sɛ yensusuw akwan foforo a wɔfa so sɛe HCOOH cation no ho. Sequential acid-base (SAB) adwinnade a wɔahyɛ ho nyansa wɔ adwuma yi mu no fa molecule ahorow a abu so kɛse wɔ ISM mu no adeyɛ a ɛkɔ ntɛmntɛm ho.
Enti, ɛda adi sɛ HCOOH bɛfa nsakrae a yɛhyɛɛ ho nyansa no mu wɔ molecule mununkum tebea a ɛyɛ sum mu. Eyi yɛ ɔkwan foforo a ɛwɔ isomerization a ɛwɔ organic molecules mu wɔ ISM no mu, a ebetumi abɔ mmɔden sɛ ɛbɛkyerɛkyerɛ abusuabɔ a ɛda isomers a ɛwɔ organic molecules a wohu wɔ ISM no ntam no mu.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpeceres, Antonio Martinez-Henares, Nkonimdi M. Rivilla, Laura Colzi, Yesu Martin-Ayɛ ne ho mfonini
Asɛmti: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physics.chem-ph) Wɔafa aka sɛ: arXiv:2301.07450 [astro-ph.GA] (anaasɛ saa nkyerɛase yi arXiv:2301.07450v1 [astro-ph.GA] ) Abakɔsɛm a wɔde too gua a: Juan Garcia de la Concepción [v1] Dwoda 18 Ɔbɛnem 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450Nsoromma mu abɔde a nkwa wom ho adesua, nsoromma mu hwɛ
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