Chapter 5
Ultraviolet astronomy
Links to WWW resourcesUV stellar spectra.........................................168 Stellar surface fluxes.....................................170 Mass loss rates............................................170 Stellar EUV sources........................................171 Background fluxes..........................................172 Cosmic background.........................................172 Geocoronal vacuum ultraviolet emission....................172 EUV plasma spectra.........................................173 Spectral features..........................................175 Important strong lines.....................................176 Ultraviolet absorption cross-sections......................177 Interstellar extinction....................................178 Analytical fits to the UV extinction......................178 Interstellar EUV attenuation...............................179 Average interstellar hydrogen densities....................180 Neutral hydrogen column density............................181 Bibliography...............................................182