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Subject
- a stars6
- absolute magnitude6
- active galactic nuclei7
- am stars1
- apparent magnitude26
- asteroseismology6
- astrometry12
- astronomical models126
- astronomical object identification11
- astronomical reference materials4
- atomic physics33
- atomic spectroscopy2
- b stars9
- barium stars6
- be stars2
- black holes1
- bp stars3
- brown dwarfs2
- carbon stars29
- catalogs21
