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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Magnetic field in the isolated massive dense clump iras 20126+4104
Astrophysical Journal Letters, Volume 750, No. 2, Article L29, Year 2012
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Description
We measured polarized dust emission at 350 μm toward the high-mass star-forming massive dense clump IRAS 20126+4104 using the SHARC II Polarimeter, SHARP, at the Caltech Submillimeter Observatory. Most of the observed magnetic field vectors agree well with magnetic field vectors obtained from a numerical simulation for the case when the global magnetic field lines are inclined with respect to the rotation axis of the dense clump. The results of the numerical simulation show that rotation plays an important role on the evolution of the massive dense clump and its magnetic field. The direction of the cold CO 1-0 bipolar outflow is parallel to the observed magnetic field within the dense clump as well as the global magnetic field, as inferred from optical polarimetry data, indicating that the magnetic field also plays a critical role in an early stage of massive star formation. The large-scale Keplerian disk of the massive (proto)star rotates in an almost opposite sense to the clump's envelope. The observed magnetic field morphology and the counterrotating feature of the massive dense clump system provide hints to constrain the role of magnetic fields in the process of high-mass star formation. © 2012. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Shinnaga, Hiroko
United States, Hilo
Caltech Submillimeter Observatory
Novak, Giles A.
United States, Evanston
Northwestern University
Vaillancourt, John E.
United States, Columbia
Universities Space Research Association
MacHida, Masahiro N.
Japan, Fukuoka
Kyushu University
Kataoka, Akimasa
Japan, Kyoto
Kyoto University
Tomisaka, Kohji
Japan, Hayama
The Graduate University for Advanced Studies
Davidson, Jacqueline A.
Australia, Perth
The University of Western Australia
Phillips, Thomas G.
United States, Hilo
Caltech Submillimeter Observatory
United States, Pasadena
California Institute of Technology
Dowell, Charles Darren
United States, Pasadena
Jet Propulsion Laboratory
Leeuw, Lerothodi L.
United States, Mountain View
Seti Institute
South Africa, Johannesburg
University of Johannesburg
Houde, Martin
Australia, Perth
The University of Western Australia
Canada, London
Western University
Statistics
Citations: 11
Authors: 11
Affiliations: 12
Identifiers
Doi:
10.1088/2041-8205/750/2/L29
ISSN:
20418205
e-ISSN:
20418213
Research Areas
Environmental
Mental Health