Subject
- stellar astronomy7
- wolf-rayet stars6
- accretion5
- early-type stars5
- horizontal branch stars5
- north galactic pole5
- optical observation5
- photographic magnitude5
- population ii stars5
- spectra5
- white dwarf stars5
- astronomy4
- astrophysics4
- atomic spectroscopy4
- catalogues4
- eclipsing binary stars4
- halo stars4
- hot stars4
- infrared4
- photographic photometry4
