ALMA Observations and Modeling of the Rotating Outflow in Orion Source I

  title={ALMA Observations and Modeling of the Rotating Outflow in Orion Source I},
  author={J. A. L'opez-V'azquez and Luis A. Zapata and S. Lizano and Jorge Cant'o},
  journal={arXiv: Solar and Stellar Astrophysics},
We present $^{29}$SiO(J=8--7) $\nu$=0, SiS (J=19--18) $\nu$=0, and $^{28}$SiO (J=8--7) $\nu$=1 molecular line archive observations made with the Atacama Large Millimeter/Submillimeter Array (ALMA) of the molecular outflow associated with Orion Source I. The observations show velocity asymmetries about the flow axis which are interpreted as outflow rotation. We find that the rotation velocity ($\sim$4--8 km s$^{-1}$) decreases with the vertical distance to the disk. In contrast, the cylindrical… 

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