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| EPoS Contribution |
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Complex Molecules in Molecular Outflows
Hector Arce Yale University, New Haven, CT, USA | |
| Outflows from young stars are among the most prominent signposts of star formation. They deposit energy and momentum into their surroundings and have a considerable impact on the dynamics, distribution, and chemical composition of the gas in star-forming clouds. Shocks produced by the interaction of high-velocity protostellar winds and the ambient cloud can heat their surroundings and trigger chemical processes that would otherwise not take place in the quiescent medium. In many cases these chemical processes result in abundance enhancement of different molecules. Our recent observations clearly show the existence of complex organic molecules in outflows. Our results indicate that it is very likely that these complex species formed on the surface of grains and were then ejected from the grain mantles by the shock. This demonstrated that spectral surveys of shocked regions using Hershcel and other (sub)-millimeter telescopes can be used to probe the composition of dust in molecular clouds. Our study also shows that the impact of outflows needs to be considered when studying complex species in hot corinos. | |
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| Caption: Spectrum showing complex organic molecules detected in the blue lobe of the L1157 outflow. | |
| Collaborators: J. Santiago-Garcia, IRAM, Spain J. K. Jorgensen, U of Copenhagen, Denmark M. Tafalla, OAN, Spain R. Bachiller, OAN, Spain D. Mardones, U de Chile, Chile G. Garay, U de Chile, Chile |
Key publication
Suggested Session: Early Phases of Disks |