Subject
- galaxy rotation6
- h alpha photometry6
- infrared6
- photographic-photometry6
- stellar evolutionary models6
- stellar radii6
- astrophysics5
- co line emission5
- gamma-ray astronomy5
- photographic photometry5
- pre-main sequence stars5
- ring galaxies5
- seyfert galaxies5
- spectra5
- star atlases5
- stars5
- two-color diagrams5
- absolute magnitude4
- globular star clusters4
- history-of-astronomy4
