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Subject
- infrared photometry[remove]478
- open star clusters[remove]478
- photometry478
- optical astronomy314
- wide-band photometry254
- ccd photometry90
- pre-main sequence stars72
- proper motions50
- x-ray sources41
- radial velocity33
- variable stars31
- h alpha photometry27
- young stellar objects24
- line intensities23
- stellar spectral types22
- stellar masses18
- astronomical object identification17
- spectroscopy16
- effective temperature15
- kron-cousins photometry15