Determination of Stellar Surface Temperature Using Ultraviolet Spectra

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Color indexes and effective temperatures for 25 standard stars have been determined as a pilot project which show a relationship between color index and effective temperature in ultraviolet region. The effective temperature was determined by comparing energy distribution curves derived from the IUE low dispersion spectra with Kurucz atmosphere model. The UV color index was deduced by integrating fluxes in 300A interval of the IUE low dispersion spectra. The relation between color index and effective temperature in ultraviolet is similar with that of optical region.

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