Cosmological concordance or chemical coincidence ? Deuterated molecular hydrogen abundances at high redshift

J. Tumlinson, A.L. Malec, R.F. Carswell, M.T. Murphy, R. Buning, N. Milutinovic, S.L. Ellison, X.L. Prochaska, R.A. Jorgenson, W.M.G. Ubachs, A.M. Wolfe

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Abstract

We report two detections of deuterated molecular hydrogen (HD) in QSO absorption-line systems atz > 2. Toward J2123-0500, we find N(HD) = 13.84 ± 0.2 for a sub-Damped Lyman Alpha system (DLA) with metallicity ≃0.5Z
Original languageEnglish
Pages (from-to)L156
JournalAstrophysical Journal Letters
Volume718
DOIs
Publication statusPublished - 2010

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