Hāʻawi nā lakio nui i ʻike ʻia o nā isomers COM i ka ISM i ka ʻike waiwai e pili ana i ka kemika a me ka physics o nā kinoea a, ʻo ka mea hope loa, ka mōʻaukala o ke ao molekala.
ʻO ka nui o ka waikawa c-HCOOH i loko o ke kikowaena anu he 6% wale nō o ka nui o ka isomer c-HCOOH, ʻaʻole i ʻike ʻia ke kumu. Maanei mākou e wehewehe nei i ke alo o c-HCOOH i loko o nā ao molekala ʻeleʻele ma o ka luku ʻia ʻana a me ka pale ʻana i ka hoʻokumu ʻia ʻana o c-HCOOH a me t-HCOOH i ka wā o ke kaʻina hana paikikala e pili ana iā HCOOH a me nā molekala he nui loa e like me HCO+ a me NH3.
Ua hoʻohana mākou i kahi ʻano hana ab initio holomua e helu i ka hoʻolaha ikehu hiki o nā ala breakdown/formation cyclic c-HCOOH a me t-HCOOH. Ua helu ʻia nā global rate constants a me nā branching factors ma muli o ke kumumanaʻo mokuʻāina hoʻololi a me ke ʻano o ka hoohalike haku ma lalo o nā kūlana ISM maʻamau.
ʻO ka luku ʻia ʻana o HCOOH ma o ka hopena me HCO+ i loko o ke kahua kinoea e alakaʻi ai i ʻekolu mau isomers o ka cation HC(OH)2+. Hiki i nā cation maʻamau ke hana me nā molekala ISM maʻamau ʻē aʻe e like me NH3 i ka lua o ka hana e hoʻi i c-HCOOH a me t-HCOOH. Hoʻākāka kēia ʻano hana i ka hoʻokumu ʻia ʻana o c-HCOOH i loko o nā ao molekala ʻeleʻele. Ke noʻonoʻo nei i kēia ʻano hana, ʻo ka hapa o c-HCOOH e pili ana i ka t-HCOOH he 25.7%.
No ka wehewehe ʻana i ka 6% i ʻike ʻia, ke manaʻo nei mākou e noʻonoʻo i nā ʻano hana hou aʻe no ka luku ʻia ʻana o ka cation HCOOH. ʻO ke ʻano hana acid-base sequential (SAB) i manaʻo ʻia ma kēia hana e pili ana i kahi kaʻina hana wikiwiki o nā molekala i maʻa mau loa i ISM.
No laila, ʻo HCOOH paha e hana i ka hoʻololi a mākou i hāpai ai ma lalo o nā kūlana ao molekala ʻeleʻele. He ʻano hana hou kēia i loko o ka isomerization o nā molekala organik i loko o ka ISM, e hoʻāʻo nei paha e wehewehe i nā pilina ma waena o nā isomers o nā molekala organik i loaʻa i ka ISM.
John Garcia, Isascun Jimenez-Serra, Jose Carlos Corchado, Germaine Molpeceres, Antonio Martinez-Henares, Victor M. Rivilla, Laura Colzi, Jesus Martin-Painted
Kumuhana: Galactic Astrophysics (astro-ph.GA), Chemical Physics (physics.chem-ph) I ʻōlelo ʻia ma ke ʻano he: arXiv:2301.07450 [astro-ph.GA] (a i ʻole kēia mana arXiv:2301.07450v1 [astro-ph.GA] ) Hoʻopaʻa i ka mōʻaukala e: Juan Garcia de la Concepción [v1] Pōʻakolu 18 Ianuali 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450Astrobiology, astrochemistry
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