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Ultraviolet spectroscopic observations of some Be stars of later typeand A-F type shell stars.

Carpenter, K. G.; Slettebak, A.

High-dispersion IUE spectra of 18 later type Be and A-F type shell stars as well as eight standard nonemission line stars have been analyzed for anomalous ionization and mass loss effects. It is found that superionization in the Be stars extends to the latest spectral subtypes but does not seem to be present in the A-F type stars. The superionized…

Abundances of carbon-bearing diatomic molecules in diffuse interstellar clouds.

Blades, J. C.; Whittet, D. C. B.; Somerville, W. B. +2 more

In order to test in detail theories concerning the gas-phase chemistry of light interstellar molecules, it is necessary to have a coherent body of observational data for a large number of sight lines. In the present investigation new and previously published data for 22 stellar lines of sight are combined to provide a basis for the study of the re…