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Subject
- open star clusters[remove]1,409
- photometry838
- optical astronomy506
- infrared photometry478
- wide-band photometry324
- radial velocity218
- ccd photometry193
- proper motions190
- pre-main sequence stars163
- chemical abundances118
- x-ray sources117
- line intensities96
- variable stars76
- milky way galaxy67
- spectroscopy66
- effective temperature56
- stellar masses54
- magellanic clouds52
- stellar associations48
- giant stars45
