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Full-Text Articles in Physical Sciences and Mathematics
Three Moving Groups Detected In The Lamost Dr1 Archive, Zhao J. K., Zhao G., Y. Q. Chen, T. D. Oswalt, K. F. Tan, Y. Zhang
Three Moving Groups Detected In The Lamost Dr1 Archive, Zhao J. K., Zhao G., Y. Q. Chen, T. D. Oswalt, K. F. Tan, Y. Zhang
Publications
We analyze the kinematics of thick disk and halo stars observed by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope. We have constructed a sample of 7993 F, G, and K nearby main-sequence stars (d < 2 kpc) with estimates of position (x, y, z) and space velocity (U, V, W) based on color and proper motion from the Sloan Digital Sky Survey DR9 catalog. Three “phase-space overdensities” are identified in (V,√U2 + 2V 2) with significance levels of σ > 3. Two of them (the Hyades–Pleiades stream …