News Release Archive:

News Release 97 of 1049

September 9, 2014 01:00 PM (EDT)

News Release Number: STScI-2014-38

Hubble Finds Companion Star Hidden for 21 Years in a Supernova's Glare


Image: Artist's Impression of Supernova 1993J

Artist's Impression of Supernova 1993JSTScI-PRC2014-38a Artist's Concept

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This is an artist's impression of supernova 1993J, an exploding star in the galaxy M81 whose light reached us 21 years ago. The supernova originated in a double-star system where one member was a massive star that exploded after siphoning most of its hydrogen envelope to its companion star. After two decades, astronomers have at last identified the blue helium-burning companion star, seen at the center of the expanding nebula of debris from the supernova. The Hubble Space Telescope identified the ultraviolet glow of the surviving companion embedded in the fading glow of the supernova.

Image Type: Artwork

Credit: NASA, ESA, and G. Bacon (STScI)


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