Abstract
High resolution (|$d\lambda\simeq0.3$| Å) ultraviolet spectra of |$\gamma^2$| Vel and ζ Pup, obtained from a star-stabilized Skylark rocket flight, have been used to study the interstellar gas in the direction of the Gum nebula. The observations confirm the existence of a large H II region in the line of sight and also give evidence for the existence of small localized regions of high gas density (∼ 104 cm−3). All of the elements observed in the interstellar gas are underabundant relative to hydrogen.
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