Tarantula Nebula’s Magnetic Maelstrom: Secret Ingredient to Surprising Survival of 30 Doradus — New research from the Stra |
30 Doradus, also known as the Tarantula Nebula, is a region in the Large Magellanic Cloud. Streamlines show the magnetic field morphology from SOFIA HAWC+ polarization maps. These are superimposed on a composite image captured by the European Southern Observatory’s Very Large Telescope and the Visible and Infrared Survey Telescope for Astronomy. Credit: Background: ESO, M.-R. Cioni/VISTA Magellanic Cloud survey. Acknowledgment: Cambridge Astronomical Survey Unit.
Most of the energy in 30 Doradus, also called the Tarantula Nebula, comes from the massive star cluster near its center, R136, which is responsible for multiple, giant, expanding shells of matter. But in this region near the nebula’s core, within about 25 parsecs of R136, things are a bit weird. The gas pressure here is lower than it should be near R136’s intense stellar radiation, and the area’s mass is smaller than expected for the system to remain stable.
However, the field is weaker in some spots, enabling gas to escape and inflate the giant shells. As the mass in these shells grows, stars can continue to form despite the strong magnetic fields.
France Dernières Nouvelles, France Actualités
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