Disks and outflows in the S255IR area of high mass star formation from ALMA 
observations

Zinchenko, Igor; Liu, Sheng-Yuan; Su, Yu-Nung; Wang, Yuan

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Disks and outflows in the S255IR area of high mass star formation from ALMA observations

MPS-Authors

Zinchenko, Igor
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Liu, Sheng-Yuan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Su, Yu-Nung
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, Yuan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2018RAA....18...93Z
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Citation

Zinchenko, I., Liu, S.-Y., Su, Y.-N., & Wang, Y. (2018). Disks and outflows in the S255IR area of high mass star formation from ALMA observations. Research in Astronomy and Astrophysics, 18.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CA0C-B

Abstract

We describe the general structure of the well known S255IR high mass star forming region, as revealed by our recent ALMA observations. The data indicate a physical relation exists between the major clumps SMA1 and SMA2. The driving source of the extended high velocity, well collimated bipolar outflow, is not the most pronounced disk-like SMA1 clump harboring a 20 M _☉ young star (S255 NIRS3), as was assumed earlier. Apparently, it is the less evolved SMA2 clump, which drives the outflow and contains a compact rotating structure (probably a disk). At the same time, the SMA1 clump drives another outflow, with a larger opening angle. The molecular line data do not show an outflow from the SMA3 clump (NIRS1), which was suggested by IR studies of this region.