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    carbon-oxygen white dwarf star tagged posts

    Astronomers find signatures of a ‘Messy’ star that made its companion go Supernova

    January 14, 2019, Categories  Astronomy/Space

    An X-ray/infrared composite image of G299, a Type Ia supernova remnant in the Milky Way Galaxy approximately 16,000 light years away.
    Credit: NASA/Chandra X-ray Observatory/University of Texas/2MASS/University of Massachusetts/Caltech/NSF

    Astronomers announced that they have identified the type of companion star that made its partner in a binary system, a carbon-oxygen white dwarf star, explode. Through repeated observations of SN 2015cp, a supernova 545 million light years away, the team detected hydrogen-rich debris that the companion star had shed prior to the explosion.

    Many stars explode as luminous supernovae when, swollen with age, they run out of fuel for nuclear fusion...

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