Subject
- supergiant stars2
- two-color diagrams2
- ultraviolet astronomy2
- a stars1
- am stars1
- ddo photometry1
- h beta photometry1
- interferometry1
- optical observation1
- parallax1
- photographic photometry1
- pre-main sequence stars1
- quasars1
- seyfert galaxies1
- south galactic pole1
- spectral energy distribution1
- star forming regions1
- stellar atmosphere1
- stellar populations1
- supernovae1
