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.

中文翻译：

---

ALMA 对猎户座普朗克星系冷团 (ALMASOP) 的调查。I. 用 ACA 检测新的热科里诺斯

我们报告了从猎户座分子中普朗克星系冷团的调查研究中检测到四个新的热科里诺源，G211.47-19.27S、G208.68-19.20N1、G210.49-19.79W 和 G192.12-11.10带有阿塔卡马紧凑阵列 (ACA) 的 Cloud Complex。在赫歇尔猎户座原恒星调查（HOPS）中，三个来源被确定为低质量 0 级原恒星。lambda Orionis 区域的一个来源首先被报告为原恒星核心。我们观察到了丰富的复杂有机分子 (COM)，主要是甲醇，但也有其他含氧 COM（在 G211.47-19.27S 和 G208.68-19.20N1 中）和益生元兴趣分子 NH2CHO（在 G211.47-19.27 S），表示热的corinos的存在。虽然我们的空间分辨率不足以解析大部分分子发射结构，COM 的大线宽和高旋转温度表明它们可能位于紧邻原恒星周围的较热和最内部的区域。在 G211.47-19.27S 中，甲醇的 D/H 比 ([CH2DOH]/[CH3OH]) 和甲醇的 12C/13C 比 ([CH3OH]/[13CH3OH]) 与其他热 corinos 相当。在四个来源中也检测到碳氢化合物和长碳链分子，如 c-C3H2 和 HCCCN，可能追踪外部和较冷的分子包膜。