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- optical astronomy2,081
- photometry2,081
- wide-band photometry[remove]2,081
- infrared photometry1,476
- open star clusters323
- variable stars299
- galaxies280
- ccd photometry210
- eclipsing binary stars197
- radial velocity176
- globular star clusters173
- spectroscopy142
- supernovae140
- surveys123
- magellanic clouds115
- redshifted111
- ultraviolet photometry101
- chemical abundances99
- x-ray sources89
- proper motions88