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Stars will eventually stop contributing metals: Study - ANI News

Stars will eventually stop contributing metals: Study - ANI News

Stars will eventually stop contributing metals: Study - ANI News
Jan 12, 2022 1 min, 3 secs

Canberra [Australia], January 12 (ANI): Two new recent papers have shed light on how the youngest generation of stars will eventually stop contributing metals back to the universe.

Stars are giant factories that produce most of the elements in the Universe - including the elements in us, and in the Earth's metal deposits.

Over time, the stars that came after the Big Bang produce heavier elements," said Amanda Karakas, first author of a paper studying metal-rich stars.

These objects affect us directly as around half of the carbon and all elements heavier than iron are synthesised by stars like our Sun.

About 90 per cent of all the lead on Earth, for example, was made in low-mass stars which also produce elements such as strontium and barium.

"We discovered that, at a certain threshold of initial metal content in the gas, stars will stop sending more metals into the Universe over their lifetime," Cinquegrana said.

"Our papers predict the evolution of younger stars (most-recent generations) which are up to seven times more metal-rich than the Sun," said Karakas.

"Our models of super metal-rich stars show that they still expand to become red giants and go on to end their lives as white dwarfs, but by that time they are not expelling any heavy elements.

Summarized by 365NEWSX ROBOTS

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