most citedExploring the origins of a new, apparently metal-free gas cloud at z = 4.4

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astro-ph.CO2022★ 2 cited

Discovery of three new near-pristine absorption clouds at -4.4

P. Frédéric Robert, Michael T. Murphy, John M. O'Meara +2

We report the discovery of three new "near-pristine" Lyman Limit Systems (LLSs), with metallicities ~1/1000 solar, at redshifts 2.6, 3.8 and 4.0, with a targeted survey at the Keck…