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Studying the Outflow-Core Interaction with ALMA Cycle 1 Observations of the HH46/47 Molecular Outflow

Zhang, Yichen and Arce, Héctor G. and Mardones, Diego and Dunham, Michael M. and Garay, Guido and Noriega-Crespo, Alberto and Corder, Stuartt and Offner, Stella (2015) Studying the Outflow-Core Interaction with ALMA Cycle 1 Observations of the HH46/47 Molecular Outflow. In: Revolution in Astronomy with ALMA: the Third Year. Astronomical Society of the Pacific Conference Series. No.499. Astronomical Society of the Pacific , San Francisco, CA, pp. 243-244. ISBN 9781583818831. http://resolver.caltech.edu/CaltechAUTHORS:20160225-141819585

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Abstract

We present preliminary analysis of ALMA cycle 1 12m array ^(12)CO /^(13)CO /C^(18)O data of the HH 46/47 molecular outflow. ^(13)CO and C^(18)O trace relatively denser outflow material than ^(12)CO and allow us to trace the outflow to lower velocities than what it possible using only the ^(12)CO emission. Interestingly, the cavity wall of the red lobe can be seen at velocity as low as 0.2 km/s. Using C^(18)O, we are now able to estimate the optical depth of ^(13)CO, and then use the corrected ^(13)CO emission to further and better correct the ^(12)CO emission and estimate the mass, momentum, and kinetic energy of the outflow. Moreover, C^(18)O reveals a flattened rotational structure at the center, likely to be a rotational envelope infalling onto an inner Keplerian disk.


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Additional Information:© 2015 Astronomical Society of the Pacific.
Record Number:CaltechAUTHORS:20160225-141819585
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160225-141819585
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ID Code:64772
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Feb 2016 22:51
Last Modified:25 Feb 2016 22:51

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