Journal
ASTRONOMY & ASTROPHYSICS
Volume 593, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201629442
Keywords
stars: formation; submillimeter: ISM; ISM: molecules; ISM: individual objects: IRAS 16061-5048c1
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Funding
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1411527] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/M000966/1] Funding Source: researchfish
- STFC [ST/L00061X/1, ST/J001465/1] Funding Source: UKRI
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Massive stars, multiple stellar systems, and clusters are born of the gravitational collapse of massive, dense, gaseous clumps, and the way these systems form strongly depends on how the parent clump fragments into cores during collapse. Numerical simulations show that magnetic fields may be the key ingredient in regulating fragmentation. Here we present ALMA observations at similar to 0.25 '' resolution of the thermal dust continuum emission at similar to 278 GHz towards a turbulent, dense, and massive clump, IRAS 16061-5048c1, in a very early evolutionary stage. The ALMA image shows that the clump has fragmented into many cores along a filamentary structure. We find that the number, the total mass, and the spatial distribution of the fragments are consistent with fragmentation dominated by a strong magnetic field. Our observations support the theoretical prediction that the magnetic field plays a dominant role in the fragmentation process of massive turbulent clumps.
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