For years, the Milky Way has been represented as a totally flat spiral, but according to astronomers at the Macquarie University in Australia and the Chinese Academy of Sciences, our galaxy resembles a "twisted disk."
According to the Astronomy web portal, researchers surveyed data of 1,339 pulsating stars, obtained through the Wide-Field Infrared Survey Explorer (WISE) space telescope, where there were a large number of Cephalidae.
When measuring its distances and drawing up a 3D map when drawing them, the result has been a map of the Milky Way very different from the family one.
The Macquarie University website in Australia specified that "the Milky Way star disc becomes increasingly distorted and twisted as far as the stars of the center of the galaxy are."
"The torsion of the warp is new," said the astronomer and participant of the study Richard DeGrijs. The investigator, explained that this "has been seen in a dozen other galaxies before, but not in ours".
Astronomers focused on making the map and not explaining why, but according to Astronomy, "the authors raise the hypothesis that as the internal disk of stars of the Milky Way rotates, it also drags the outer disk, distorting the flat spiral ".
Licai Deng of the Chinese Academy of Sciences said that "this research provides an updated up-to-date map for studying the stellar movements of our galaxy and the origins of the Milky Way disk."
The study was published in the journal Nature Astronomy on Monday.
* Galactic Twist: The Milky Way's disk is warped Astronomy Magazine * Milky Way is warped and twisted, not flat The Guardian * Milky Way is 'S-shaped', 3D map reveals, in a new way of looking at our heavenly home ABC News * View full coverage on … https://t.co/ETEtne3bZt pic.twitter.com/cFahKkc0Jp
– Hurshal (@ Hurshal)
February 4, 2019
Using a sample of 1,300+ Classical Cepheids, Chen et al. have probed the extent and the warp of the Galaxy's stellar disk, finding that it follows Brigg's Law for spiral galaxies. https://t.co/GFeD9xY8uV pic.twitter.com/xrMdhCgj2F
– Nature Astronomy (@NatureAstronomy)
February 4, 2019