AI 中文总结
该研究对银心Sgr B2南部新发现的富化学分子云G+0.633-0.0604进行表征，证实其为G+0.693的天体化学孪生体，二者构成研究星际分子复杂性的基准对。
AI 中文摘要
天体化学正处于黄金时代，当前星际普查的约350种分子中，超过四分之一是在过去三年中被探测到的。推动这一进展的来源之一是G+0.693-0.027云，它位于银心Sgr B2复合体的北部。在本研究中，我们对G+0.633-0.0604进行了天体化学表征，这是一个在Sgr B2南部边缘新发现的化学丰富的分子云。G+0.633拥有超过120种物质的清单，为仅在G+0.693方向报道的几种益生分子提供了可靠的二次探测，确立它是第一个经证实的G+0.693天体化学孪生体，同时证明该云的非凡化学并非独一无二。此外，G+0.633相比G+0.693具有观测优势，因为它的线宽窄一半。G+0.633和G+0.693共同构成了独特的基准对，用于揭示星际介质中的分子复杂性和益生化学。
英文摘要
Astrochemistry is living a golden age, with more than a quarter of the ~350 molecules in the current interstellar census having been detected over the last three years. One of the sources driving this progress is the G+0.693-0.027 cloud, located in the northern part of the Galactic Centre Sgr B2 complex. In this contribution, we present the astrochemical characterisation of G+0.633-0.0604, a newly discovered chemically rich molecular cloud at the southern edge of Sgr B2. With an inventory of >120 species, G+0.633 provides robust second detections of several prebiotic molecules only reported towards G+0.693, establishing it as the first confirmed astrochemical twin of G+0.693 while demonstrating that the extraordinary chemistry of this cloud is not unique. Furthermore, G+0.633 offers an observational advantage over G+0.693 since it displays half narrower linewidths. Together, G+0.633 and G+0.693 form a unique benchmark pair for unveiling molecular complexity and prebiotic chemistry in the interstellar medium.
Comments5 pages, 2 figures. Proceedings for the IAU Symposium 405 "Traversing the Galactic Center in Space and Time"
