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Subject
- absolute magnitude5
- active galactic nuclei1
- apparent magnitude20
- astrometry21
- astronomical models22
- astronomical object identification10
- astronomical reference materials4
- atomic physics2
- catalogs4
- ccd photometry107
- chemical abundances240
- chemically peculiar stars10
- dwarf stars12
- early-type stars2
- eclipsing binary stars6
- effective temperature42
- emission line stars1
- extinction4
- galaxies168
- galaxy classification systems21
