Bulletin of the American Astronomical Society · 1971 · 32 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsSpectroscopic AnalysisSpectroscopyEmission SpectroscopyGalactic AstrophysicsGalactic NucleiNucleosynthesisStellar SpectroscopyStellar StructureActive Galactic Nuclei ContributionActive Galactic Nuclei Infrared EmissionActive Galactic Nuclei Radio CoresActive Galactic Nuclei Ultraviolet EmissionActive Galactic Nucleus Contribution