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Published August 15, 1985 | Published
Journal Article Open

A new luminosity component in 3C 48


The infrared emission from the quasar 3C 48 has a luminosity L ≃ 5 x 10^(12) L_☉ and dominates the power output of the quasar system. It is shown that the infrared emission, unlike that of most radio-loud quasars, is most likely not an extension of the radio emission of the quasar. It is argued that the infrared emission in 3C 48 is probably thermal radiation arising in a highly luminous galaxy surrounding the quasar.

Additional Information

© 1985 American Astronomical Society. Received 1985 April 29; accepted 1985 May 23. We thank all of our colleagues on the IRAS project engineers, managers, and scientists-who have made these measurements possible. We especially thank the members of the subgroup on pointed observations of active galaxies and E. Young and E. Kopan for help in reducing the observations. We also thank our colleagues at Caltech, especially K. Matthews and J. Elias, who have made many of the ground measurements over the course of several years. We thank S. Phinney for pointing out the necessity for special geometry and O. Neugebauer for discussions and providing G. N. the environment to write up these observations. The IRAS project is supported by NASA; ground-based infrared astronomy at Palomar is supported by a grant from the NSF.

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Published - 1985ApJ___295L__27N.pdf


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