Subject
- line intensities48
- radio galaxies45
- hst photometry44
- variable stars44
- ultraviolet astronomy42
- apparent magnitude39
- galaxy kinematics39
- h ii regions39
- seyfert galaxies39
- redshifted / redshift36
- quasars34
- h i line emission30
- metallicity30
- radio astronomy29
- supernovae28
- extinction27
- ccd photometry24
- absolute magnitude23
- giant stars23
- infrared astronomy23