The NASA and European Space Agency’s Hubble Space Telescope has captured an image of DEM L249, a supernova remnant some 160,000 light-years away from the constellation Mountain Constellation.
According to NASA, a massive starburst, known as a supernova, is behind streaks of cosmic gas called DEM L249. The US space agency added that it is likely to be a remnant of a Type 1a supernova, which occurs when a white dwarf star dies.
White dwarfs are usually stable, but in a binary system, when two stars orbit each other, a white dwarf can gravitationally pull on so much companion matter that it reaches critical mass and explodes.
Scientists describe DEM L249, located in the Large Magellanic Cloud, a satellite galaxy of the Milky Way, as an unusual supernova remnant.
Astronomers using NASA’s Chandra X-ray Observatory and the European Space Agency’s XMM-Newton found that its gas was hotter and brighter in X-rays than a typical Type 1a supernova remnant.
Astronomers believe that the white dwarf star DEM L249 was more massive than expected. Heavier stars expel more gas, which also means that they would have died earlier in their life cycle.
The Hubble telescope captured this image while searching for surviving companions of white dwarf stars that have become supernova in the Large Magellanic Cloud.
Source: phys.org
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