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Subject
- absolute magnitude7
- accretion3
- active galactic nuclei260
- agn1
- apparent magnitude35
- astrometry23
- astronomical models12
- astronomical object identification17
- astronomical reference materials3
- atomic physics5
- atomic spectroscopy1
- bl lacertae objects111
- black holes8
- cataclysmic variable stars1
- catalogs23
- ccd photometry12
- chemical abundances25
- chemically peculiar stars2
- co line emission2
- dwarf stars1
