Accretion and Outflow in Orion-KL Source I
Name
Wright_2024_ApJ_974_150.pdf
Description
Published version
Size
4.81 MB
Format
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Checksum (MD5)
9578fc9606ba7a963df3f238b27d9995
Author(s)
Wright, Melvyn
McGuire, Brett A
Ginsburg, Adam
Hirota, Tomoya
Bally, John
Hwangbo, Ryan
Bhadra, T Dex
John, Chris
Dave, Rishabh
Date Issued
October 10, 2024
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Citation
Melvyn Wright et al 2024 ApJ 974 150
Version
Final published version
Abstract
We present Atacama Large Millimeter/submillimeter Array observations of SiO, SiS, H2O, NaCl, and SO line emission at ∼30–50 mas resolution. These images map the molecular outflow and disk of Orion Source I (SrcI) on ∼12–20 au scales. Our observations show that the flow of material around SrcI creates a turbulent boundary layer in the outflow from SrcI, which may dissipate angular momentum in the rotating molecular outflow into the surrounding medium. Additionally, the data suggest that the proper motion of SrcI may have a significant effect on the structure and evolution of SrcI and its molecular outflow. As the motion of SrcI funnels material between the disk and the outflow, some material may be entrained into the outflow and accrete onto the disk, creating shocks that excite the NaCl close to the disk surface.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.3847/1538-4357/ad7026
