In this paper, we present the first results from a CARMA high-resolution ¹²CO(1-0), ¹³CO(1-0), and C¹⁸O(1-0) molecular line survey of the North America and Pelican (NAP) Nebulae. CARMA observations have been combined with single-dish data from the Purple Mountain 13.7 m telescope, to add short spacings and to produce high-dynamic-range images. We find that the molecular gas is predominantly shaped by the W80 H ii bubble, driven by an O star. Several bright rims noted in the observation are probably remnant molecular clouds, heated and stripped by the massive star. Matching these rims in molecular lines and optical images, we construct a model of the three-dimensional structure of the NAP complex. Two groups of molecular clumps/filaments are on the near side of the bubble: one is being pushed toward us, whereas the other is moving toward the bubble. Another group is on the far side of the bubble, and moving away. The young stellar objects in the Gulf region reside in three different clusters, each hosted by a cloud from one of the three molecular clump groups. Although all gas content in the NAP is impacted by feedback from the central O star, some regions show no signs of star formation, while other areas clearly exhibit star formation activity. Additional molecular gas being carved by feedback includes cometary structures in the Pelican Head region, and the boomerang features at the boundary of the Gulf region. The results show that the NAP complex is an ideal place for the study of feedback effects on star formation.

在本文中，我们展示了北美和鹈鹕的 CARMA 高分辨率¹² CO(1-0)、¹³ CO(1-0) 和 C ¹⁸ O(1-0) 分子线调查的第一个结果（ NAP）星云。CARMA 观测已与紫金山 13.7 m 望远镜的单碟数据相结合，以增加短间距并产生高动态范围图像。我们发现分子气体主要由 W80 H ii气泡，由一颗 O 星驱动。观察中注意到的几个明亮的边缘可能是残余的分子云，被大质量恒星加热和剥离。在分子线和光学图像中匹配这些边缘，我们构建了 NAP 复合体的三维结构模型。气泡的近侧有两组分子团块/细丝：一组被推向我们，而另一组则向气泡移动。另一组在泡沫的远端，正在离开。海湾地区的年轻恒星位于三个不同的星团中，每个星团都由来自三个分子团团之一的云团承载。尽管 NAP 中的所有气体含量都受到中央 O 星反馈的影响，但一些区域没有显示出恒星形成的迹象，而其他区域则明显表现出恒星形成活动。通过反馈雕刻的其他分子气体包括鹈鹕头区域的彗星结构，以及海湾地区边界的回旋镖特征。结果表明，NAP复合体是研究恒星形成反馈效应的理想场所。