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Subject
- stars17
- surveys15
- galaxies13
- spectroscopy12
- theoretical-models9
- galaxy-formation8
- galaxy-masses8
- galaxy-photometry8
- infrared-photometry8
- h-alpha-photometry7
- h-beta-photometry7
- hi line7
- interstellar-line-emission7
- radio7
- absolute-magnitude6
- active-galactic-nuclei6
- milky-way-galaxy6
- galaxy-ages5
- redshift-surveys5
- astrometry4