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Subject
- a stars2
- active galactic nuclei1
- apparent magnitude1
- astrometry4
- astronomical object identification7
- b stars1
- be stars20
- ccd photometry3
- co line emission1
- diffuse molecular clouds1
- dwarf stars1
- early-type stars11
- effective temperature2
- emission line stars[remove]116
- galaxies3
- galaxy classification systems1
- galaxy planes5
- giant stars1
- globular star clusters1
- h alpha photometry10
