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Subject
- absolute magnitude2
- active galactic nuclei3
- ap stars1
- apparent magnitude2
- astrometry3
- astronomical models1
- astronomical object identification1
- astronomical reference materials[remove]52
- atomic physics3
- brown dwarfs1
- catalogs7
- chemical abundances4
- co line emission1
- early-type stars1
- earth (planet)1
- eclipsing binary stars3
- effective temperature1
- exoplanets1
- extinction2
- galaxies9
