Unidentified IRAS sources: Ultrahigh-luminosity galaxies

Creators: Houck, J. R.; Schneider, D. P.; Danielson, G. E.; Neugebauer, G.; Soifer, B. T.; Beichman, C. A.; Lonsdale, C. J.

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Abstract

Optical imaging and spectroscopy has been obtained for six of the high galactic latitude infrared sources recently reported by Houck and colleagues from the IRAS survey to have no obvious optical counterparts on the POSS prints. All are identified with visually faint galaxies that have total luminosities in the range 5 x 10^(11) L_☉ to 5 X 10^(12) L_☉. This luminosity emerges virtually entirely in the infrared. The origin of the luminosity, which fs one to two orders of magnitude greater than that of "normal" galaxies, is not known at this time.

Additional Information

© 1985 American Astronomical Society. Received 1984 August 13; accepted 1984 November 29. This research was supported in part through the Jet Propulsion Laboratory, California Institute of Technology under contract with NASA (J. R. H., C. A. B., C. J. L.), by NSF grant AST83-12699 (G. N., B. T. S.), AST83-14134 (D. P. S.), and NASA contract NAS5-25451 (G. E. D.). This is contribution 4110 of the Division of Geological and Planetary Sciences.

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