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Subject
- a stars5
- absolute magnitude5
- accretion1
- active galactic nuclei2
- am stars2
- ap stars1
- apparent magnitude6
- asteroids2
- asteroseismology1
- astrometry9
- astronomical models6
- astronomical object identification22
- astronomical reference materials1
- b stars4
- be stars9
- carbon stars6
- cataclysmic variable stars18
- ccd photometry126
- chemical abundances21
- classification2