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High-resolution spectra of the chemically peculiar HgMn stars s Lupi and HR 7775, obtained with the Hubble Space T elescope/Goddard High Resolution Spectrograph, are investigated for their abundance of bismuth by comparison with LTE synthetic spectrum modeling. HR 7775, previously known from International Ultraviolet Explorer spectra to display strong lines of Bi II, is determined to have bismuth present at an enhancement level of nearly 5 orders of magnitude from the lines Bi II jj1436, 1902doi:10.1086/320063 fatcat:rdil7t4r5jdutl3ct5xnh6mrae