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Subject
- photometry61
- surface photometry[remove]61
- galaxies45
- galaxy classification systems16
- catalogs12
- infrared photometry12
- galaxy clusters9
- optical astronomy9
- globular star clusters5
- infrared sources5
- ccd photometry4
- hst photometry3
- redshifted3
- absolute magnitude2
- apparent magnitude2
- astronomical models2
- infrared astronomy2
- redshifted / redshift2
- sloan photometry2
- surveys2
