They state in the abstract to their paper: 'We use Hubble Space Telescope imaging to measure the absolute proper motion of the hypervelocity star (HVS) HE 0437-5439, a short-lived B star located in the direction of the Large Magellanic Cloud (LMC).'
And, 'The velocity vector points directly away from the center of the Milky Way....'
In conclusion: 'The flight time of the HVS from the Milky Way exceeds its main-sequence lifetime, thus its stellar nature requires it to be a blue straggler. The large space velocity rules out a Galactic-disk ejection. Combining the HVS's observed trajectory, stellar nature, and required initial velocity, we conclude that HE 0437-5439 was most likely a compact binary ejected by the Milky Way's central black hole.'
The discovery of HE 0437-5439 will help astronomers learn more about how galaxies form and how these very fast traveling stars originated and evolved over time.
However, right now, astronomers are still puzzled over this star.
Page four concludes with two possible scenarios on this puzzle: the age of the star.
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William Atkins completed educational degrees in science (bachelor’s in physics and mathematics) from Illinois State University (Normal, United States) and business (master’s in entrepreneurship and bachelor’s in industrial relations) from Western Illinois University
