论文标题
Apex大型杂种猎户座传统调查（酒精）。 I.调查概述
The APEX Large CO Heterodyne Orion Legacy Survey (ALCOHOLS). I. Survey overview
论文作者
论文摘要
Orion Molecular Cloud Complyst在最接近的GMC和高质量恒星形成的位置。它的YSO种群是彻底表征的。因此，该区域是研究恒星形成的主要目标。 在这里，我们验证了顶点上超级车64像素杂化阵列的性能。我们给出描述性概述，概述了一组向猎户座GMC复合物获得的宽场CO（3-2）光谱立方体，旨在表征云层各种区域中延长分子气体的动态和结构，范围从猎户座B中非常活跃的恒星形成的非常活跃的位置到南部Orion A. A. A. A. A. A. We present a 2.7 square degree (130pc$^2$) mapping survey in the CO(3-2) transition, obtained using SuperCAM on APEX at an angular resolution of 19'' (7600AU or 0.037pc at a distance of 400pc), covering L1622, NGC2071, NGC2068, OriB9, NGC2024, and NGC2023 in Orion B, and Orion A中的L1641云的南部。 我们描述了CO的集成发射和线矩图以及位置 - 速度图，并详细讨论一些子区域。在NGC2024中最突出的双重分量的线分解为双重组件，可以看到扩展气泡的证据，在那里我们认为大部分分子气体位于HII区域的前景中。高CO（3-2）/CO（1-0）线的比率揭示了沿着IC434 HII区域的NGC2023/NGC2024区域中猎户座B的西边缘的温暖CO。在L1641-S中看到的多个分离的径向速度成分表明，它由越来越大的距离序列组成。我们发现了一个小的球形云 - “牛星云”球 - NGC2071以北。我们追踪NGC2071-IR流出和NGC2024 CO射流的高速速度线机翼。 Protostellar Dust Core Fir4（而不是FIR5）是NGC2024单极流出的真正驾驶源。
The Orion molecular cloud complex harbours the nearest GMCs and site of high-mass star formation. Its YSO populations are thoroughly characterized. The region is therefore a prime target for the study of star formation. Here, we verify the performance of the SuperCAM 64 pixel heterodyne array on APEX. We give a descriptive overview of a set of wide-field CO(3-2) spectral cubes obtained towards the Orion GMC complex, aimed at characterizing the dynamics and structure of the extended molecular gas in diverse regions of the clouds, ranging from very active sites of clustered star formation in Orion B to comparatively quiet regions in southern Orion A. We present a 2.7 square degree (130pc$^2$) mapping survey in the CO(3-2) transition, obtained using SuperCAM on APEX at an angular resolution of 19'' (7600AU or 0.037pc at a distance of 400pc), covering L1622, NGC2071, NGC2068, OriB9, NGC2024, and NGC2023 in Orion B, and the southern part of the L1641 cloud in Orion A. We describe CO integrated emission and line moment maps and position-velocity diagrams and discuss a few sub-regions in some detail. Evidence for expanding bubbles is seen with lines splitting into double components, most prominently in NGC2024, where we argue that the bulk of the molecular gas is in the foreground of the HII region. High CO(3-2)/CO(1-0) line ratios reveal warm CO along the western edge of Orion B in the NGC2023/NGC2024 region facing the IC434 HII region. Multiple, well separated radial velocity components seen in L1641-S suggest that it consists of a sequence of clouds at increasingly larger distances. We find a small, spherical cloud - the 'Cow Nebula' globule - north of NGC2071. We trace high velocity line wings for the NGC2071-IR outflow and the NGC2024 CO jet. The protostellar dust core FIR4 (rather than FIR5) is the true driving source of the NGC2024 monopolar outflow.
