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Subject
- galaxies[remove]4,252
- photometry1,941
- optical astronomy1,015
- spectroscopy780
- redshifted771
- catalogs744
- infrared photometry661
- surveys606
- infrared sources540
- galaxy classification systems529
- radio galaxies511
- galaxy clusters441
- radial velocity336
- radio astronomy322
- active galactic nuclei305
- wide-band photometry283
- chemical abundances264
- x-ray sources249
- sloan photometry234
- hst photometry204
