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The spectral-flux distribution /0.36-3.5 microns/ of nonstellar light from the broad-line radio galaxies 3C 227 and 3C 382
- Source :
- The Astrophysical Journal. 219:818
- Publication Year :
- 1978
- Publisher :
- American Astronomical Society, 1978.
-
Abstract
- Optical-infrared (0.36-3.5 microns) photometric data of the radio galaxy 3C 382, obtained in 1976, show a distinct excess at the longest wavelengths, an ultraviolet excess, and a significant increase in brightness since previous photometry by Sandage (1972). A flux excess at infrared wavelengths has also been observed from 3C 227. These properties demonstrate the presence of emission not attributable to stars, probably originating in the nucleus, extending into the infrared portion of the spectrum.
- Subjects :
- Physics
Luminous infrared galaxy
Infrared astronomy
Infrared
Radio galaxy
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Photometry (optics)
Space and Planetary Science
Cosmic infrared background
Astrophysics::Solar and Stellar Astrophysics
Light emission
Astrophysics::Earth and Planetary Astrophysics
Emission spectrum
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 15384357 and 0004637X
- Volume :
- 219
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal
- Accession number :
- edsair.doi...........083e91924c1c366ec0f15ab59e9064cd
- Full Text :
- https://doi.org/10.1086/155842