Abstract
Deep charge-coupled device imaging has been used to identify a number of IRAS (Infrared Astronomical Satellite) blank field sources with distant galaxies, and indicates that most high-latitude unidentified IRAS point sources have an extragalactic origin. The present sample of galaxies seems to include some with the largest known ratios of IR-to-optical luminosity, with values of L(IR)/L(B) ranging upwards of 200. A redshift obtained for one source, 0422+009, indicates that this object has ∼35 times the absolute IR luminosity of the starburst galaxy M82.
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Aaronson, M., Olszewski, E. Optical counterparts of unidentified IRAS point sources: infrared luminous galaxies. Nature 309, 414–417 (1984). https://doi.org/10.1038/309414a0
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DOI: https://doi.org/10.1038/309414a0
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