Ultraviolet extinction in the Small Magellanic Cloud

Details Ultraviolet extinction in the Small Magellanic Cloud Ultraviolet extinction in the Small Magellanic Cloud

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99l...5r&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. L5-L7.

Astronomy and Astrophysics

Astronomy

54

Cosmic Dust, Early Stars, Interstellar Extinction, Magellanic Clouds, Particle Size Distribution, Ultraviolet Astronomy, Abundance, Heavy Elements, Iue, Ubv Spectra

Scientific paper

The considered investigation is concerned with the determination of the UV extinction curve in the Galaxy on the basis of the spectra of stars in the SMC obtained with the aid of the International Ultraviolet Explorer. The determination rests on the comparison of the observed spectral energy distribution of pairs of similar stars with different extinctions. Since extinction, as indicated by the color excess E(B-V), is rather small in the SMC, special care must be exercised in chosing stars as similar as possible. Uncertainties in the spectral classification and in the photometry of these stars result in large uncertainties in the extinction curve. The presented results are, therefore, still preliminary and must be confirmed by the study of more stars.

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