Saturday, 11 January 2014

Astronomers: discovered the ‘Hypervelocity Star’

Astronomers-discovered-the-hypervelocity-star


According to the discovered of astronomers, Dozens of solitary stars that move fast enough to escape the gravitational grasp of the Milky Way galaxy.


The stars travel at over 1.5 million kilometer per hour, but the scientists have no idea what force drives them.

According to the Lauren Palladino (Vanderbilt University graduate student), “These new hypervelocity stars are very different from the ones that have been discovered previously,”


According to the research’s press release, ““The original hypervelocity stars are large blue stars and appear to have originated from the galactic center. Our new stars are relatively small – about the size of the sun – and the surprising part is that none of them appear to come from the galactic core,”


According to the Holley-Bockelm ann, “It’s very hard to kick a star out of the galaxy,”


The scientist also stressed, “The most commonly accepted mechanism for doing so involves interacting with the super massive black hole at the galactic core. That means when you trace the star back to its birthplace, it comes from the center of our galaxy. None of these hypervelocity stars come from the center, which implies that there is an unexpected new class of hypervelocity star, one with a different ejection mechanism,”


The discovery of this new set of “hypervelocity” stars was described at the annual meeting of the American Astronomical Society in Washington DC


The hypervelocity stars’ existence was deep-rooted 17 years later, when Smithsonian astronomers found the first outcast star. Two more hypervelocity stars were bring into being in 2006. In 2010, astronomers using NASA’s Hubble Space Telescope reported detecting HIM 0437-5439 – a hypervelocity star that had sped away from the galaxy at a speed of 2.5 million kilometers an hour.


Now, the latest study by Palladino and her social group has exposed 20 more stars that can be categorized as the new type of “hypervelocity stars.”



Astronomers: discovered the ‘Hypervelocity Star’

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