Most lithium-rich giant star discovered
This makes the lithium study remarkably challenging, researchers said.
The star is in the direction of Ophiuchus, north side of the Galactic disk, with a distance of 4,500 light years to Earth, said researchers at National Astronomical Observatories of China (NAOC) and Chinese Academy of Sciences.
"The discovery of this star has largely increased the upper limit of the observed lithium abundance, and provides a potential explanation to the extremely lithium-rich case," said Professor Zhao Gang.
The findings, published in the journal Nature Astronomy, were realized with the help of The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) located in northern China.
Lithium is considered one of the three elements synthesized in the Big Bang, together with Hydrogen and Helium.
Detailed information of the star was obtained by a follow-up observation from the Automated Planet Finder (APF) telescope at Lick Observatory, they said.
Besides measuring the anomalously high lithium abundance, the research team also proposed a possible explanation for the lithium-rich phenomenon by the nuclear network simulation with the up-to-date atomic data as an input.
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