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High resolution UV stellar spectroscopy with the HST/GHRS, challenges and opportunities for atomic physics.

Leckrone, D. S.; Wahlgren, G. M.; Johansson, S. +1 more

The Goddard High Resolution Spectrograph (GHRS) on the Hubble Space Telescope (HST) is producing ultraviolet spectra of unprecedented resolution and photometric quality. The authors illustrate this with observations of the ultra-sharp-lined, chemically peculiar B-type star, χ Lupi. The photosphere of this star is rich in heavy elements, and its UV…