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Astronomers discover a new type of star covered in helium burning ashes 5nvklj





Astronomers discover a new type of star covered in helium burning ashes 9tpt39

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Astronomers discover a new type of star covered in helium burning ashes

Dragon
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Astronomers discover a new type of star covered in helium burning ashes Empty Astronomers discover a new type of star covered in helium burning ashes

Post by Dragon Sat Feb 19, 2022 2:09 am

A team of German astronomers, led by Professor Klaus Werner of the University of Tübingen, have discovered a strange new type of star covered in the by-product of helium burning.

It is possible that the stars might have been formed by a rare stellar merger event.

The results are published in Monthly Notices of the Royal Astronomical Society.

While normal stars have surfaces composed of hydrogen and helium, the stars discovered by Werner and his colleagues have their surfaces covered with carbon and oxygen, the ashes of helium burning—an exotic composition for a star.

The situation becomes more puzzling as the new stars have temperatures and radii that indicate they are still burning helium in their cores—a property typically seen in more evolved stars than those observed by Werner and his team in this study.


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Astronomers discover a new type of star covered in helium burning ashes 334pu7m
Dragon
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Astronomers discover a new type of star covered in helium burning ashes Empty Re: Astronomers discover a new type of star covered in helium burning ashes

Post by Dragon Sat Feb 19, 2022 2:10 am

Astronomers discover a new type of star covered in helium burning ashes Astronomers-discover-a
Credit: Nicole Reindl, Attribution (CC BY 4.0)

Artist's impression of a rare kind of stellar merger event between two white dwarf stars.


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Astronomers discover a new type of star covered in helium burning ashes 334pu7m
Dragon
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Astronomers discover a new type of star covered in helium burning ashes Empty Re: Astronomers discover a new type of star covered in helium burning ashes

Post by Dragon Sat Feb 19, 2022 2:12 am



Supernova 1A merger due to two white dwarfs

When two white dwarf stars merge, they form a type 1a supernova, as well as emit a huge amount of gravitational waves.


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Astronomers discover a new type of star covered in helium burning ashes 334pu7m
Dragon
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Astronomers discover a new type of star covered in helium burning ashes Empty Re: Astronomers discover a new type of star covered in helium burning ashes

Post by Dragon Sat Feb 19, 2022 2:13 am



Merging White Dwarfs Will Explode in a Supernova


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Astronomers discover a new type of star covered in helium burning ashes 334pu7m

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    Current date/time is Thu May 19, 2022 12:32 pm