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Unidentified IRAS sources - Ultrahigh-luminosity galaxies
Houck, J. R.; Schneider, D. P.; Danielson, G. E.; Beichman, C. A.; Lonsdale, C. J.; Neugebauer, G.; Soifer, B. T.
AA(Cornell University, Ithaca, NY), AB(Palomar Observatory, Pasadena, CA), AC(Palomar Observatory, Pasadena, CA), AD(Palomar Observatory, Pasadena, CA), AE(Palomar Observatory, Pasadena, CA), AF(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA), AG(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA)
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 290, March 1, 1985, p. L5-L8. Previously announced in STAR as N85-15537. (ApJL Homepage)
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NASA/STI Keywords:
Energy Distribution, Galaxies, Infrared Radiation, Stellar Luminosity, Astronomical Spectroscopy, Flux Density, Infrared Astronomy Satellite, Photometry
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Optical imaging and spectroscopy measurements were obtained for six of the high galactic latitude infrared sources reported by Houck, et al. (1984) 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 to the 11th power stellar luminosity to 5 x 10 to the 12th power stellar luminosity. This luminosity emerges virtually entirely in the infrared. The origin of the luminosity, which is one to two orders of magnitude greater than that of normal galaxies, is not known at this time.

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