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Most lithium-rich giant star discovered

Press Trust of India  |  Beijing 

Chinese scientists have discovered the most lithium-rich giant ever known - with abundance 3,000 times higher than normal - which could shed new light on the evolution of the

The 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 (NAOC) and

"The discovery of this has largely increased the upper limit of the observed abundance, and provides a potential explanation to the extremely lithium-rich case," said ZHAO Gang.

The findings, published in the journal Astronomy, were realised with the help of The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) located in northern

is considered one of the three elements synthesised in the Big Bang, together with Hydrogen and Helium.

The abundance of the three elements was regarded as the strongest evidence of the Big Bang,which describes how the expanded from a very high-density and high-temperature state.

The evolution of lithium has been widely studied in modern astrophysics, however, a few giants were found to be lithium-rich in the past three decades.

This makes the lithium study remarkably challenging, researchers said.

Detailed information of 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 to the lithium-rich phenomenon by the nuclear network with the up-to-date atomic data as an input.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Tue, August 07 2018. 12:05 IST