Gravity and Rotation Drag the Magnetic Field in High-mass Star Formation

Beuther, HenrikMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (författare)

The formation of hot stars out of the cold interstellar medium lies at the heart of astrophysical research. Understanding the importance of magnetic fields during star formation remains a major challenge. With the advent of the Atacama Large Millimeter Array, the potential to study magnetic fields by polarization observations has tremendously progressed. However, the major question remains how much magnetic fields shape the star formation process or whether gravity is largely dominating. Here, we show that for the high-mass star-forming region G327.3 the magnetic field morphology appears to be dominantly shaped by the gravitational contraction of the central massive gas core where the star formation proceeds. We find that in the outer parts of the region, the magnetic field is directed toward the gravitational center of the region. Filamentary structures feeding the central core exhibit U-shaped magnetic field morphologies directed toward the gravitational center as well, again showing the gravitational drag toward the center. The inner part then shows rotational signatures, potentially associated with an embedded disk, and there the magnetic field morphology appears to be rotationally dominated. Hence, our results demonstrate that for this region gravity and rotation are dominating the dynamics and shaping the magnetic field morphology.

Soler, Juan D.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (författare)
Linz, HendrikMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (författare)
Henning, ThomasMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (författare)
Gieser, CarolineMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (författare)
Kuiper, RolfEberhard Karls Universität Tübingen,Eberhard Karls University of Tübingen (författare)
Vlemmings, Wouter,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)wouterv (författare)
Hennebelle, PatrickParis Diderot University, France (författare)
Feng, Siyi (författare)
Smith, RowanUniversity of Manchester (författare)
Ahmadi, AidaUniversiteit Leiden (UL),Leiden University (UL) (författare)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG)Eberhard Karls Universität Tübingen (creator_code:org_t)

Ingår i:Astrophysical Journal: American Astronomical Society904:21538-43570004-637X

Av författaren/redakt...: Beuther, Henrik; Soler, Juan D.; Linz, Hendrik; Henning, Thomas; Gieser, Caroline; Kuiper, Rolf; visa fler...; Vlemmings, Woute ...; Hennebelle, Patr ...; Feng, Siyi; Smith, Rowan; Ahmadi, Aida; visa färre...

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