Abstract
IT is well known that the energy distributions of spiral galaxies rise sharply in the ultraviolet. Recent observations of six Sb and Sc galaxies1 made with the TD1 satellite place this steep rise at considerably longer wavelengths than the earlier observations made with the OAO-2 satellite2,3. If the TD1 results are correct, the large ultraviolet flux, which is now considerably closer to the U band, suggests the possibility of detecting more distant galaxies with deep ultraviolet plates than the usual deep B, V or R plates, since this region of high flux will be redshifted into the U band.
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ELLIS, R., FONG, R. & PHILLIPPS, S. On the optical observation of galaxies with large redshifts. Nature 265, 313–314 (1977). https://doi.org/10.1038/265313a0
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DOI: https://doi.org/10.1038/265313a0
