IC 4996 Vilnius phot. and Gaia DR2 astrometry
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The open cluster IC 4996 in Cygnus and its vicinity are investigated applying two-dimensional photometric classification of stars measured in the Vilnius seven-color photometric...
针对天鹅座内的疏散星团IC 4996及其周边天区，本研究采用维尔纽斯七色测光（Vilnius seven-color photometric）系统下测得的恒星数据开展二维测光分类相关研究……
