Subject
- quasars250
- supernovae221
- galaxy clusters217
- line intensities214
- x-ray sources210
- stellar spectral types185
- active galactic nuclei184
- infrared astronomy168
- ultraviolet photometry166
- magellanic clouds164
- catalogs162
- effective temperature162
- galaxy classification systems156
- stellar masses154
- stellar distance152
- h alpha photometry144
- pre-main sequence stars144
- metallicity139
- exoplanets136
- astronomical object identification133
