Academic Thesis

Basic information

Name Watanabe Makoto
Belonging department Physics
Occupation name
researchmap researcher code B000222325
researchmap agency Okayama University of Science

Title

Magnetic Stability of Massive Star-forming Clumps in RCW 106

Bibliography Type

Joint Author

Author

Shohei Tamaoki, Koji Sugitani, Quang Nguyen-Luong, Fumitaka Nakamura, Takayoshi Kusune, Takahiro Nagayama, Makoto Watanabe, Shogo Nishiyama, Motohide Tamura

Summary

The RCW 106 molecular cloud complex is an active massive star-forming region where a ministarburst is taking place. We examined its magnetic structure by near-IR polarimetric observations with the imaging polarimeter SIRPOL on the IRSF 1.4 m telescope. The global magnetic field is nearly parallel to the direction of the Galactic plane and the cloud elongation. We derived the magnetic field strength of ∼100–1600 μG for 71 clumps with the Davis–Chandrasekhar–Fermi method. We also evaluated the magnetic stability of these clumps and found that massive star-forming clumps tend to be magnetically unstable and gravitationally unstable. Therefore, we propose a new criterion to search for massive star-forming clumps. These details suggest that the process enhancing the clump density without an increase of the magnetic flux is essential for the formation of massive stars and the necessity for accreting mass along the magnetic field lines.

Magazine(name)

Astrophysical Journal Letters

Publisher

American Astronomical Society

Volume

875

Number Of Pages

2

StartingPage

L16

EndingPage

Date of Issue

2019/04

Referee

Exist

Invited

Not exist

Language

English

Thesis Type

Research papers (academic journals)

ISSN

DOI

10.3847/2041-8213/ab1346

NAID

PMID

URL

J-GLOBAL ID

arXiv ID

ORCID Put Code

DBLP ID