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Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region

Dragon
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Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region Empty Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region

Post by Dragon Sat Jun 12, 2021 4:31 am

A giant star called VVV-WIT-08 exhibited a smooth, eclipse-like drop in brightness to a depth of 97% in 2012; minimum brightness occurred in April 2012 and the total event duration was a few hundred days, according to an analysis of data from the VISTA Variables in the Via Lactea survey (VVV), a project using the British-built VISTA telescope in Chile and operated by ESO.

VVV-WIT-08 is a giant star located more than 25,000 light-years away in the constellation of Sagittarius.

It may belong to a new class of ‘blinking’ binary system, where a giant star — 100 times larger than the Sun — is eclipsed once every few decades by an as-yet unseen orbital companion.

The companion, which may be another star or a planet, is surrounded by an opaque disk, which covers the giant star, causing it to disappear and reappear in the sky.


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Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region 334pu7m
Dragon
Dragon
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Post by Dragon Sat Jun 12, 2021 4:32 am

Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region Image_9752-VVV-WIT-08
Image credit: Amanda Smith, University of Cambridge.

An artist’s impression of the VVV-WIT-08 binary system.


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Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region 334pu7m
Dragon
Dragon
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Post by Dragon Sat Jun 12, 2021 4:33 am



Milky Way's galactic center in amazing new panorama from Chandra

"Threads of superheated gas and magnetic fields" are revealed near the Milky Way galaxy's supermassive black hole in this new panorama created using the Chandra X-ray Observatory.


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Giant ‘Blinking’ Star Spotted in Milky Way’s Central Region 334pu7m

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