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STELLAR CHEMISTRY
Magnetic fields could hold the key to star formation
by Staff Writers
Preston, UK (SPX) Jun 08, 2018

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Astronomers have discovered new magnetic fields in space which could shed light on how stars are formed and uncover the mysteries behind one of the most famous celestial images. For the first time, extremely subtle magnetic fields in the Pillars of Creation - a structure made famous thanks to an iconic image taken by the Hubble Space Telescope - have been discovered and mapped.

The structure consists of cosmic dust and cold, dense gas that have nurseries of stars forming at their tips. This innovative research has shown that the magnetic fields that run along the lengths of the Pillars are at a different angle to the regions surrounding the Pillars, revealing the reason behind their unusual structure.

This ground-breaking discovery suggests that the Pillars have evolved due to the strength of the magnetic field and that the Pillars are held up thanks to magnetic support, suggesting that stars could be formed by the collapse of clumps of gas being slowed down by magnetic fields, and resulting in a pillar-like formation.

The discovery was made by a global team of researchers known as BISTRO and led by astronomers from the University of Central Lancashire (UCLan) who made measurements at the James Clerk Maxwell Telescope in Hawaii. Using an instrument on the telescope known as a polarimeter, the researchers showed that the light emitted from the Pillars is polarised, indicating the direction of the magnetic field.

Professor Derek Ward-Thompson, head of physical sciences and computing at UCLan, said: "This discovery will revolutionise our understanding of how stars are formed. The technology employed to view the minutiae of the magnetic fields is truly remarkable, and the fact that we have been able to observe the incredibly weak magnetic field with this sensitive instrument will help us to solve the mystery of the formation of stars."

The James Clerk Maxwell Telescope (JCMT), located on Maunakea in Hawaii, is operated by the East Asian Observatory. The BISTRO Survey is a large team of scientists working to understand the role of magnetic fields in the formation of stars, with members from across the partner regions of the JCMT: China, Japan, South Korea, Taiwan and Vietnam and from participating universities in the United Kingdom and Canada.

Research Report: "First Observations of the Magnetic Field Inside the Pillars of Creation: Results from the BISTRO Survey," Kate Pattle et al., 2018, to appear in Astrophysical Journal Letters


Related Links
University Of Central Lancashire
Stellar Chemistry, The Universe And All Within It


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STELLAR CHEMISTRY
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Caltech scientists have found, for the first time, that merging pairs of neutron stars - the burnt-out cores of stars that have exploded - create the majority of heavy elements in small "dwarf" galaxies. Heavy elements, such as silver and gold, are key for planet formation and even life itself. By studying these dwarf galaxies, the researchers hope to learn more about the primary sources of heavy elements for the whole universe. The origin of the majority of the heaviest elements of the periodic ... read more

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