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- absolute-magnitude8
- galaxies[remove]18
- galaxy-ages7
- galaxy-formation10
- galaxy-luminosities2
- galaxy-masses10
- galaxy-photometry10
- h-alpha-photometry10
- h-beta-photometry10
- infrared-photometry10
- interstellar-line-emission10
- observational-cosmology1
- photometry1
- quasars1
- redshift-surveys6
- spectroscopy8
- stars2
- surveys1
- theoretical-models10
- variability1