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Subject
- optical astronomy[remove]4,776
- photometry3,988
- infrared photometry2,155
- wide-band photometry2,081
- galaxies1,011
- sloan photometry727
- spectroscopy720
- radial velocity531
- variable stars520
- surveys519
- open star clusters505
- redshifted497
- proper motions329
- chemical abundances316
- eclipsing binary stars312
- globular star clusters293
- trigonometric parallax287
- ccd photometry282
- multiple stars269
- medium band photometry252