The solar stellar connection in the far ultraviolet

摘要

The far ultraviolet activity of solar type stars, as measured with the IUE are compared to that of the Sun, as measured by the Solar Irradiance Monitor of the Solar Mesosphere Explorer. The relationships between the ultraviolet activity at different levels of the atmospheres of solar type stars were explored. Diagrams were produced that depict correlations of fluxes of ultraviolet emission lines formed at different temperatures in the stellar outer atmosphere. Secondary goals were to establish, quantitatively, the strength of the solar ultraviolet activity within the class of solar type stars and to examine the amplitudes of rotational modulations of the solar emission lines during the declining portion of the current sunspot cycle.