Abstract
view Abstract Citations (129) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ultraviolet stars in the Orion Nebula and toward HD 147889. Bohlin, R. C. ; Savage, B. D. Abstract The International Ultraviolet Explorer (IUE) was used to obtain low resolution absolute ultraviolet energy distributions for the four Trapezium stars Theta(1) Orionis A, B, C, and D, Theta(2) Orionis A and B, HD 147889, and several unreddened standard stars. The observations for Theta(1) Orionis B reveal a peculiar extended object. The measurements for the rest of the stars were used to derive UV extinction curves. The derived curves are very different from the average galactic curve. The curves for the Orion stars all exhibit smaller than normal middle and far-UV extinctions. Although a 2175 A feature is present, its strength, when normalized to E(B-V), is smaller than in the average galactic curve. In contrast, the curve for HD 147889 has a pronounced 2175 A feature followed by smaller than normal extinction for an inverse wavelength between 5 and 7 per micron. Publication: The Astrophysical Journal Pub Date: October 1981 DOI: 10.1086/159265 Bibcode: 1981ApJ...249..109B Keywords: Interstellar Extinction; Orion Nebula; Spectral Energy Distribution; Stellar Spectra; Stellar Spectrophotometry; Ultraviolet Spectra; Cosmic Dust; Early Stars; Interstellar Matter; Iue; Spaceborne Astronomy; Stellar Radiation; Astrophysics full text sources ADS | data products SIMBAD (11) MAST (1) INES (1)
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