Ultraviolet interstellar absorption toward HD 5980 in the Small Magellanic Cloud

Details Ultraviolet interstellar absorption toward HD 5980 in the Small Magellanic Cloud Ultraviolet interstellar absorption toward HD 5980 in the Small Magellanic Cloud

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267...93f&link_type=abstract

Astrophysical Journal, Part 1, vol. 267, Apr. 1, 1983, p. 93-108.

Astronomy and Astrophysics

Astronomy

65

Interstellar Extinction, Interstellar Gas, Magellanic Clouds, Stellar Spectra, Ultraviolet Absorption, Ultraviolet Astronomy, Far Ultraviolet Radiation, H Ii Regions, High Dispersion Spectrographs, Iue, Milky Way Galaxy, Radial Velocity, Signal To Noise Ratios, Spectrum Analysis, Ultraviolet Spectra

Scientific paper

Individual high-dispersion International Ultraviolet Explorer (IUE) spectra of extragalactic stars are noisy because of the long exposure times required and the inherent limitations of the IUE detectors. A program has, therefore, been undertaken to obtain multiple ultraviolet spectra of the brightest Magellanic Cloud stars in order to produce composite spectra with higher signal-to-noise ratios than in individual spectra. The present investigation is concerned with results for HD 5980. The target star, HD 5980, is one of the brightest extragalactic far-ultraviolet sources in the sky. HD 5980 is located in the northeast quadrant of NGC 346, the largest H II region and OB star cluster in the SMC. The analysis of the interstellar line spectrum of HD 5980 provides a number of conclusions about the complex absorption characteristics of the interstellar gas toward the SMC.

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