Other
Scientific paper
Jul 1967
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967natur.215..377i&link_type=abstract
Nature, Volume 215, Issue 5099, pp. 377-378 (1967).
Other
Scientific paper
ACCURATE measurements of the wavelength dependence of interstellar obscuration in the spectral range from 10,000 Å to 3400 Å (refs. 1-4) show a distinct change in the slope of the extinction curve at 4300 Å. Extinction observations have been made for a number of galactic regions, and it is found that a change in slope always occurs at 4300 Å but that the magnitude of the change differs significantly from one region to another. At the same time, an unidentified interstellar band of half-width approximately 20 Å appears at 4430 Å, but the discontinuity in the slope of the extinction curve does not affect the profile of this band5.
Ireland J. G.
Nandy K.
Seddon Harry
Wolstencroft Ramon D.
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