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Milky Way is deformed



"To our surprise, we found that our collection of 1,379 Cepheid stars and the Milky Way's gas disk are being closely observed in 3D, opening up new perspectives on the formation of our galaxy," said Professor Richard de Grijs of the University of Macquarie in Sydney, Australia, and lead author of the article. "Most importantly, we find in the outer regions of the Milky Way that the S-type star disk is deformed into a progressively twisted spiral pattern," adds 19459004.

This reminded the team of earlier observations from a dozen other galaxies that also showed progressively twisted spiral patterns. "If we combine our findings with these other observations, we conclude that the Milky Way's deformed spiral pattern is likely caused by" torques "(or constraining forces) through the massive inner disk" says the Doctor Liu Chao chief investigator and co-author of the newspaper.

"This new morphology provides an important updated map for studies of star motion in our galaxy and the formation of the Milky Way disk." adds that to the doctor Deng Licai, chief investigator of the NAOC and co-author of the article

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