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- W3104391358 abstract "We present a detailed analysis of the kinematics of 112 stars that mostly comprise the high velocity S-cluster and orbit the super massive black hole SgrA* at the center of the Milky Way. For 39 of them orbital elements are known, for the remainder we know proper motions. The distribution of inclinations, and proper motion flight directions deviate significantly from a uniform distribution which one expects if the orientation of the orbits are random. Across the central arcseconds the S-cluster stars are arranged in two almost edge on disks that are located at a position angle approximately +-45 o with respect to the Galactic plane. The angular momentum vectors for stars in each disk point in both directions, i.e. the stars in a given disk rotate in opposite ways. The poles of this structure are located only about 25 o from the line of sight. This structure may be the result of a resonance process that started with the formation of the young B-dwarf stars in the cluster about 6 Myr ago. Alternatively, it indicated the presence of a disturber at a distance from the center comparable to the distance of the compact stellar association IRS13." @default.
- W3104391358 created "2020-11-23" @default.
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- W3104391358 date "2020-06-17" @default.
- W3104391358 modified "2023-10-10" @default.
- W3104391358 title "Kinematic Structure of the Galactic Center S Cluster" @default.
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- W3104391358 doi "https://doi.org/10.3847/1538-4357/ab93ae" @default.
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