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    white dwarf tagged posts

    Gaia Satellite has discovered a rare Binary System where one star is ‘eating’ the other, but neither star has hydrogen, the most common element in the Universe

    July 18, 2015, Categories  Astronomy/Space

    IMAGE: Artist's impression of Gaia14aae. Credit: Marisa Grove/Institute of Astronomy

    IMAGE: Artist’s impression of Gaia14aae.
    Credit: Marisa Grove/Institute of Astronomy

    It is a type of 2-star system known as a Cataclysmic Variable, where one super dense white dwarf star is stealing gas from its companion star, effectively ‘cannibalising’ it.The system could also be an important laboratory for studying ultra-bright supernova explosions, which are a vital tool for measuring the expansion of the Universe. The system, named Gaia14aae, is 730 light years away in Draco constellation. It was discovered by the ESA’s Gaia satellite in August 2014 when it suddenly became 5 times brighter over the course of a single day.

    >>Additional observations made by the Center for Backyard Astrophysics (CBA), a collaboration of amateur and professional astronomers, found the system is a rare e...

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