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star from the & # 39; heart of darkness & # 39; the Milky Way hurled



When the ancestors of humanity learned to walk upright, a star at a speed of 6 million km / h was shot from the supermassive black hole in the center of our galaxy.

Five million years after this dramatic eruption, a research group led by Sergey Koposov of the McWilliams Center for Cosmology at Carnegie Mellon University discovered the star S5-HVS1 in the crane-shaped constellation Grus. The star was discovered as it moved relatively close to Earth (29,000 light-years away) at unprecedented speed, approximately ten times faster than most stars in our galaxy.

"The speed of the discovered star is so high that it inevitably leaves the galaxy and never returns," said Douglas Boubert, researcher at Oxford University and co-author of the study, in a statement .

Video: How the Milky Way's black hole ejects a runaway star
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  An artistic representation of the star S5- HVS1 is ejected from the supermassive black hole of the Milky Way galaxy, Sagittarius A *.

An artistic representation of the star S5-HVS1 ejected from the supermassive black hole of the galaxy galaxy, Sagittarius A *.

[Picture credits: James Josephides / Swinburne Astronomy Productions]

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Save up to 61% on 13 topics for the year! have long suspected that black holes with stars can eject y high speeds. However, we never had a clear association of such a fast star with the galactic center, "Koposov said in the statement.

The star was discovered with observations from the Anglo-Australian Telescope (AAT), a 12.8-foot (3, 9) telescope and Gaia satellite of the European Space Agency (ESA), discovered in the Southern Stellar Stream Spectroscopic Survey (S5), a collaboration of astronomers from Chile, the United States, the United Kingdom and Australia.

www English:. German: www.germnews.de/archive/gn/1999/12/11.html After the star was discovered, the researchers were able to track the star up to Sagittarius A *, the black hole in the middle of the Milky Way, and it is an incredible example of The Hills Mechanism Proposed by the Astronomer Jack Hills Thirty Years Ago What stars become visible at high speed after an interaction between a binary system and the black hole at the center of the galaxy? s expelled the centers of galaxies?

  The position and direction of the star S5-HVS1 in the night sky. The star shoots away from the center of our galaxy.

The position and direction of the star S5-HVS1 in the night sky. The star shoots away from the center of our galaxy.

[Photo credit: Sergey Koposov]

"This is the first clear demonstration of the active hill mechanism," said Ting Li, a staff member of Carnegie Observatories and Princeton University, who led the S5 collaboration, said in the statement. "It's really amazing to see this star because we know it's formed in the Galactic Center, a place that is very different from our local area and is a visitor from a foreign country." To study the stellar streams – destroy dwarf galaxies and globular clusters – we used the available resources of the instrument to find interesting targets in the Milky Way, and we've found something amazing for free. We hope to find more with our future observations! Kyler Kuehn, deputy technology director at Lowell Observatory, which is part of the S5 Executive Committee, added to the statement releases from the Royal Astronomical Society.

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