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Subject
- photometry[remove]605
- spectroscopy[remove]605
- optical astronomy381
- infrared photometry265
- galaxies209
- redshifted173
- wide-band photometry142
- radial velocity111
- sloan photometry111
- surveys90
- line intensities71
- chemical abundances68
- infrared astronomy67
- quasars59
- galaxy clusters53
- active galactic nuclei50
- stellar spectral types43
- hst photometry39
- supernovae34
- metallicity33