A High Deuterium Abundance at z=0.7; Evidence for Cosmic Inhomogeneity?

J. K. Webb, R. F. Carswell, K. M. Lanzetta +3

Recent HST/GHRS observations of the z = 0.7010 absorber toward the QSO 1718+4807 (selected because of apparently ideal characteristics for measuring D/H) yield a D/H significantly…