Subject
- catalogs1
- ccd photometry1
- galaxy kinematics1
- galaxy planes1
- h alpha photometry1
- interstellar clouds1
- o stars1
- photographic magnitude1
- photographic photometry1
- planetary nebulae1
- polarimetry1
- protostars1
- pulsars1
- quasars1
- radio continuum emission1
- radio sources1
- redshifted / redshift1
- solar system1
- star atlases1
- stellar evolutionary models1
