The first accurate 3D map of our galaxy reveals its true form: it is twisted and twisted.
Astronomers from the Macquarie University and the Chinese Academy of Sciences used 1339 "standard" stars to cite the true form of our home galaxy in a paper published in Nature Astronomy today.
They found that the star of the starry Milky Way is becoming more and more "dashed" and distorts the stars from the center of the galaxy further.
"We usually think spiral galaxies are quite flat, like Andromeda, which you can easily see through a telescope," says Professor Richard de Greis, co-author and astronomer from Macquarie University in Sydney, Australia.
Trying to determine the true shape of our galaxy, how to stand in the garden in Sydney and trying to determine the shape of Australia. But in the past 50 years there have been indications that the clouds of hydrogen in the Milky Way are offended. The new map shows that the vibrated disk of the Milky Way also contains young stars. This confirms that the tilted spiral pattern is caused by the torque from the rotation of the massive inner disk of the Milky Way to the stars.
"It's completely difficult to determine the distance from the Sun to parts of the outer gas of the Milky Way without having a clear idea of what the disc looks like," says Xiaodian Chen, chief author of the Chinese Academy of Sciences in Beijing.
"This research provides a crucial updated map for studying the galaxy's stellar movements and the origin of the Milky Way Disk," said Liyai Deng, senior researcher at the Chinese Academy of Sciences and Co-author of Labor.
The team built their map using 1339 large pulsating stars, up to 100,000 brighter than our sun. The data for these classic cepheid stars were provided by the Infrared Wide Field Research Center (WISE).
Astronomers noticed dozens of other galaxies that showed similar progressively intertwined spiral patterns in their outer regions. So, the invertebrates of our Milky Way are rare, but not unique.
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