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Galactic status of the Sun

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The so-called theory of stellar orbit diffusion along the Galactic radius is analysed. It is shown that, at present, there is no strong chemical evidence that the Sun was born about 2 kpc closer to the Galactic centre than its current location in the Galaxy. A new mechanism for large and rapid radial wandering of a star due to resonant interaction with the Galactic spiral density waves at the corotation is considered. The influence of spiral arms and the corotation resonance on the evolution of chemical pattern of the Galactic disc is discussed.

Keywords: Chemical evolution; Kinematics; Milky Way; Sun

Document Type: Research Article


Affiliations: Rostov State University, Zorge Street 5, Rostov-on-Don, 344090, Russia

Publication date: April 1, 2006

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