Subject
- radio astronomy2
- stellar ages2
- ultraviolet photometry2
- active galactic nuclei1
- astrophysical masers1
- b stars1
- catalogs1
- ccd photometry1
- chemically peculiar stars1
- exoplanets1
- g stars1
- galaxy classification systems1
- galaxy kinematics1
- h beta photometry1
- h i line emission1
- h ii regions1
- hertzsprung russell diagram1
- interferometry1
- morgan-keenan classification1
- narrow band photometry1
