论文标题
猎户座原恒星的化学性质：橙子与桃子有所不同吗？橘子II
The chemical nature of Orion protostars: Are ORANGES different from PEACHES? ORANGES II
论文作者
论文摘要
了解我们的太阳的化学过去以及生命如何在地球上出现并不是卑鄙的壮举。我们可以采用的最好的策略是研究位于与太阳出生的环境相似并评估其化学含量的环境中的新生儿。特别是，热的科里诺群岛是主要目标，因为最近的研究表明，热corinos和Comets的星际复合有机分子（ICOM）丰度之间的相关性。 Orion Alma新一代调查（Oranges）旨在评估与太阳出生环境（OMC-2/3细丝）中最接近和最佳类似物中的热corinos数量。在这种情况下，我们研究了19个太阳质量原恒星的化学性质，发现26 \％的样品来源显示出温暖的甲醇排放，指示热corinos。与Perseus低质量恒星形成区域相比，在该区域检测到$ \ sim 60 $ \％的热corinos，后者在OMC-2/3细丝中似乎相对较少。虽然这表明猎户座和珀尔修斯中原始恒星的化学性质是不同的，但需要改进的统计数据才能巩固这一结果。如果两个区域确实不同，这将表明环境可能在塑造质体的化学成分中发挥作用。
Understanding the chemical past of our Sun and how life appeared on Earth is no mean feat. The best strategy we can adopt is to study newborn stars located in an environment similar to the one in which our Sun was born and assess their chemical content. In particular, hot corinos are prime targets since recent studies showed correlations between interstellar Complex Organic Molecules (iCOMs) abundances from hot corinos and comets. The ORion ALMA New GEneration Survey (ORANGES) aims to assess the number of hot corinos in the closest and best analogue to our Sun's birth environment, the OMC-2/3 filament. In this context, we investigated the chemical nature of 19 solar-mass protostars and found that 26\% of our sample sources shows warm methanol emission indicative of hot corinos. Compared to the Perseus low-mass star-forming region, where the PErseus ALMA CHEmistry Survey (PEACHES) detected $\sim 60$\% of hot corinos, the latter seem to be relatively scarce in the OMC-2/3 filament. While this suggests that the chemical nature of protostars in Orion and Perseus is different, improved statistics are needed in order to consolidate this result. If the two regions are truly different, this would indicate that the environment is likely playing a role in shaping the chemical composition of protostars.
