Subject
- planetary nebulae5
- proper motions5
- seyfert galaxies5
- apparent magnitude4
- magellanic clouds4
- star forming regions4
- stellar distance4
- stellar spectral types4
- co line emission3
- spectral energy distribution3
- supernovae3
- wide-band photometry3
- absolute magnitude2
- astronomical models2
- galactic center2
- h i line emission2
- late-type stars2
- novae2
- ob stars2
- protostars2
