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Subject
- infrared photometry[remove]179
- optical astronomy[remove]179
- photometry179
- redshifted[remove]179
- wide-band photometry100
- galaxies81
- surveys76
- spectroscopy53
- sloan photometry36
- quasars33
- active galactic nuclei29
- x-ray sources23
- supernovae22
- galaxy clusters21
- catalogs19
- infrared sources17
- ultraviolet photometry16
- radio astronomy14
- astronomical object identification12
- radio sources12