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Subject
- a stars2
- absolute magnitude6
- accretion9
- active galactic nuclei55
- apparent magnitude12
- asteroids1
- astrometry6
- astronomical models10
- astronomical object identification7
- atomic physics10
- atomic spectroscopy3
- b stars8
- barium stars3
- be stars20
- bl lacertae objects5
- black holes2
- brown dwarfs2
- carbon stars12
- cataclysmic variable stars3
- catalogs16
