论文标题
阿尔玛（Alma
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): I. Detection of New Hot Corinos with ACA
论文作者
论文摘要
我们报告了四个新热Corino来源的检测，G211.47-19.27S，G208.68-19.20N1，G210.49-19.79W和G192.12-11.10从Orion Molecular Molecular Cloud与Atacama Compact Array（ACA）中的Planck Galactic Coldems（ACA）中的Planck Galactic Coldems进行的调查研究中。在Herschel Orion Protostar调查（HOPS）中，三个来源被确定为低质量质量0级原子。 Lambda Orionis区域中的一个来源首先被报道为原始的核心。我们已经观察到大量的复杂有机分子（COM），主要是甲醇，但也观察到其他含氧com（在G211.47-19.27s和G208.68-19.20N1中）和益生元兴趣NH2CHO的分子（在G211.47-19.27S中），表明冠状冠的效果。尽管我们的空间分辨率不足以解决大多数分子发射结构，但COM的较大线宽和高旋转温度表明它们可能驻留在立即周围的较热和最内向的区域中。在G211.47-19.27S中，甲醇（[CH2DOH]/[CH3OH]）的D/H比和甲醇（[CH3OH]/[13CH3OH]）的12C/13C比与其他热Corinos的甲醇（[CH3OH]/[13CH3OH]）相当。在四个来源中还检测到碳氢化合物和长碳链分子，例如C-C3H2和HCCCN，可能会追踪外部和冷却的分子信封。
We report the detection of four new hot corino sources, G211.47-19.27S, G208.68-19.20N1, G210.49-19.79W and G192.12-11.10 from a survey study of Planck Galactic Cold Clumps in the Orion Molecular Cloud Complex with the Atacama Compact Array (ACA). Three sources had been identified as low mass Class 0 protostars in the Herschel Orion Protostar Survey (HOPS). One source in the lambda Orionis region is firstly reported as a protostellar core. We have observed abundant complex organic molecules (COMs), primarily methanol but also other oxygen-bearing COMs (in G211.47-19.27S and G208.68-19.20N1) and the molecule of prebiotic interest NH2CHO (in G211.47-19.27S), signifying the presence of hot corinos. While our spatial resolution is not sufficient for resolving most of the molecular emission structure, the large linewidth and high rotational temperature of COMs suggest that they likely reside in the hotter and innermost region immediately surrounding the protostar. In G211.47-19.27S, the D/H ratio of methanol ([CH2DOH]/[CH3OH]) and the 12C/13C ratio of methanol ([CH3OH]/[13CH3OH]) are comparable to those of other hot corinos. Hydrocarbons and long carbon-chain molecules such as c-C3H2 and HCCCN are also detected in the four sources, likely tracing the outer and cooler molecular envelopes.
