论文标题
阿尔玛（Alma
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): A Hot Corino Survey toward Protostellar Cores in the Orion Cloud
论文作者
论文摘要
星际介质（ISM）中复杂的有机分子（COM）的存在引起了人们的极大兴趣，因为它可能与宇宙中生命的起源和流行率有关。为了研究COM的发生及其可能的起源，我们对Protostellar核心进行了化学普查，作为Orion Planck Galactic Coldic Clumps（Almasop）项目的ALMA调查的一部分。我们报告了56级0/I Protostellar核心中的11个热Corino来源的检测，这些corino源表现出了热和丰富的COM的紧凑排放。发现的所有热源源可能是0类，其温暖区域的大小（$> $ 100 K）与100 au相当。热Corino来源的光度与甲醇总数及其排放程度表现出正相关。此类相关性与热氧化菌的存在的热解动图是一致的，并表明较低的光度（0类）源可能具有较小的区域，并具有com的排放量。使用相同的样品选择方法和检测标准，当考虑云距离和有限的样本量时，猎户座云中温暖甲醇的检测率（15/37）和珀尔修斯云（28/50）在统计上是相似的。观察相同的COM过渡将带来更有用的云属性比较。
The presence of complex organic molecules (COMs) in the interstellar medium (ISM) is of great interest since it may link to the origin and prevalence of life in the universe. Aiming to investigate the occurrence of COMs and their possible origins, we conducted a chemical census toward a sample of protostellar cores as part of the ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP) project. We report the detection of 11 hot corino sources, which exhibit compact emissions from warm and abundant COMs, among 56 Class 0/I protostellar cores. All the hot corino sources discovered are likely Class 0 and their sizes of the warm region ($>$ 100 K) are comparable to 100 au. The luminosity of the hot corino sources exhibits positive correlations with the total number of methanol and the extent of its emissions. Such correlations are consistent with the thermal desorption picture for the presence of hot corino and suggest that the lower luminosity (Class 0) sources likely have a smaller region with COMs emissions. With the same sample selection method and detection criteria being applied, the detection rates of the warm methanol in the Orion cloud (15/37) and the Perseus cloud (28/50) are statistically similar when the cloud distances and the limited sample size are considered. Observing the same set of COM transitions will bring a more informative comparison between the cloud properties.
