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| EPoS Contribution |
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Outflows from Massive Star Forming Regions
Pamela Klaassen ESO, Garching bei München, Germany | |
| Massive stars are a major driver of galaxy evolution, and the outflows produced during their protostellar lives inject a large amount of energy and momentum into their natal environment, possibly enhancing the turbulence in the surrounding GMC itself. Here, we present high resolution (~1") CO and 13CO (J=2-1) observations of the outflows from a number of well studied HII regions. For both isotopologues, observations were made in two separate SMA configurations, and for CO, zero spacing observations were obtained at the JCMT. Thus, these large scale structures have been mapped at high resolution. We find outflow momenta and energetics consistent with single dish survey results, but have observed these outflows at high enough resolution to determine the sources of the outflows, their collimation factors and to see that the molecular outflows originate at the ionization boundaries of the HII regions. | |
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| Caption: CO/13CO outflows from two sources in our sample. The blue and red color scales represent the CO emission combined from all three datasets (SMA and JCMT) and the contours represent the 13CO emission combined from the two SMA configurations. The green emission shows the 230GHz continuum emission from each HII region which is resolved in both cases. | |
| Collaborators: C. D. Wilson, McMaster, Canada E. R. Keto, CfA, USA Q. Zhang, CfA, USA R. Galvan-Madrid, CfA, USA H. Y. Liu, CfA, USA K. Qiu, MPIfR, Germany |
Key publication
Suggested Session: Massive Stars, Turbulence |