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Subject
- spectroscopy[remove]243
- surveys[remove]243
- redshifted117
- galaxies103
- optical astronomy97
- photometry90
- quasars49
- infrared photometry45
- infrared astronomy33
- active galactic nuclei31
- sloan photometry30
- line intensities29
- chemical abundances23
- galaxy clusters20
- x-ray sources19
- radial velocity18
- infrared sources17
- catalogs15
- stellar spectral types15
- wide-band photometry14