论文标题
部分可观测时空混沌系统的无模型预测
BFS 10: A nascent bipolar H II region in a filamentary molecular cloud
论文作者
论文摘要
我们介绍了紧凑型水泡HII区BFS 10及其高丝状分子云的研究。我们利用来自五个大学射电天文台的12CO观测来确定分子云的距离，大小，质量和速度结构。从UKIRT红外深空调查获得的红外观察结果和Spitzer红外阵列摄像头以及加拿大银河平面调查的无线电连续观测，用于提取有关中央HII地区的信息。这包括电离光子速率和红外光度等特性，以及识别与中央O9 V星相关的丰富嵌入式星团。关于HII区域的膨胀速率和电离恒星寿命的时间表表明，BFS 10会发展为双极HII区域的可能性很大。尽管预计该区域将成为双极性，但我们从云速度结构中得出结论，没有证据支持这样的想法，即BFS 10位置的恒星形成是由两个碰撞云触发的。对分子云中的嵌入式年轻恒星对象（YSO）进行了搜索。确定了两个不同的YSO区域；一个与丰富的嵌入式簇和另一个与中间质量YSO相关的稀疏组相关的区域。
We present a study of the compact blister HII region BFS 10 and its highly filamentary molecular cloud. We utilize 12CO observations from the Five College Radio Astronomy Observatory to determine the distance, size, mass, and velocity structure of the molecular cloud. Infrared observations obtained from the UKIRT Infrared Deep Sky Survey and the Spitzer Infrared Array Camera, as well as radio continuum observations from the Canadian Galactic Plane Survey, are used to extract information about the central HII region. This includes properties such as the ionizing photon rate and infrared luminosity, as well as identifying a rich embedded star cluster associated with the central O9 V star. Time-scales regarding the expansion rate of the HII region and lifetime of the ionizing star reveal a high likelihood that BFS 10 will develop into a bipolar HII region. Although the region is expected to become bipolar, we conclude from the clouds velocity structure that there is no evidence to support the idea that star formation at the location of BFS 10 was triggered by two colliding clouds. A search for embedded young stellar objects (YSOs) within the molecular cloud was performed. Two distinct regions of YSOs were identified; one region associated with the rich embedded cluster and another sparse group associated with an intermediate mass YSO.
