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OAO-2 Observations of the Near Ultraviolet Extinction Feature

Published online by Cambridge University Press:  14 August 2015

Blair D. Savage
Blair D. Savage*
Affiliation:
Space Astronomy Laboratory, Washburn Observatory, University of Wisconsin, Madison, Wis. U.S.A.

Abstract

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OAO-2 near UV spectral scans of 75 early-type stars have been examined for evidence of the UV extinction bump. The bump has been detected in 40 of these stars. The position of the maximum of the bump is within ± 40 Å of 2175 Å in all cases. A color excess between the wavelengths 2175 Å and 3500 Å was determined for all 40 stars. This color excess, which is a measure of the bump strength, correlates very well with E(B – V) except for stars associated with nebulosity.

Type
Part I Extinction
Information
Symposium - International Astronomical Union , Volume 52: Interstellar Dust and Related Topics , 1973 , pp. 21 - 27
Copyright
Copyright © Reidel 1973 

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