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Stellar Thief Is the Surviving Companion to a Supernova 5nvklj





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Stellar Thief Is the Surviving Companion to a Supernova

Dragon
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Post by Dragon Fri Apr 27, 2018 9:13 pm

Seventeen years ago, astronomers witnessed a supernova go off 40 million light-years away in the galaxy called NGC 7424, located in the southern constellation Grus, the Crane. Now, in the fading afterglow of that explosion, NASA's Hubble Space Telescope has captured the first image of a surviving companion to a supernova. This picture is the most compelling evidence that some supernovas originate in double-star systems.

“We know that the majority of massive stars are in binary pairs,” said Stuart Ryder from the Australian Astronomical Observatory (AAO) in Sydney, Australia, and lead author of the study. “Many of these binary pairs will interact and transfer gas from one star to the other when their orbits bring them close together.”

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Stellar Thief Is the Surviving Companion to a Supernova 334pu7m
Dragon
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Post by Dragon Fri Apr 27, 2018 9:15 pm

Stellar Thief Is the Surviving Companion to a Supernova Stsci-h-p1820a-f-2383x1837
Credits: NASA, ESA, S. Ryder (Australian Astronomical Observatory), and O. Fox (STScI)

Seventeen years ago, astronomers witnessed supernova 2001ig go off 40 million light-years away in the galaxy NGC 7424, in the southern constellation Grus, the Crane. Shortly after, scientists photographed the supernova with the European Southern Observatory’s Very Large Telescope (VLT) in 2002. Two years later, they followed up with the Gemini South Observatory, which hinted at the presence of a surviving binary companion. As the supernova’s glow faded, scientists focused Hubble on that location in 2016. They pinpointed and photographed the surviving companion, which was possible only due to Hubble’s exquisite resolution and ultraviolet sensitivity. Hubble observations of SN 2001ig provide the best evidence yet that some supernovas originate in double-star systems.

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Stellar Thief Is the Surviving Companion to a Supernova 334pu7m
Dragon
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Stellar Thief Is the Surviving Companion to a Supernova Empty Re: Stellar Thief Is the Surviving Companion to a Supernova

Post by Dragon Fri Apr 27, 2018 9:19 pm



The star that went supernova 40 million light-years away was part of a binary star system. The Hubble Space Telescope has now spotted the other star in the explosion’s fading afterglow.


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