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The stellar spectroscopic data of SDSS-DR8 (The Eighth Data Release of Sloan Digital Sky Survey) and the near-infrared photometric data of 2MASS (Two Micron All Sky Survey) point sources are used to analyze the fundamental parameters of the open cluster NGC 6791. Using the radial velocities of 274 stars in the region of the cluster, we calculate the membership probability for each star with the maximum...
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