Title: BFS 10: A nascent bipolar H II region in a filamentary molecular cloud

Abstract: 

H II regions are emission nebula in the interstellar medium where recent, massive star formation has occurred.  Here, I will summarize a recent project to study the blister HII region BFS 10. 12CO Observations from the Five College Radio Astronomy Observatory were used to determine the parent molecular clouds properties, such as distance, size, mass, and velocity structure. Infrared observations from the UKIRT IR Deep Sky Survey, Spizter IRAC, and radio continuum observations from the Canadian Galactic Plane Survey were used to extract information about this HII region. This includes its properties such as the ionizing photon rate, infrared luminosity, as well as identifying a rich embedded cluster associated with a central O9 V star. 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 cloud’s 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.

In person only -- Physics 3