R
Ryan Cooke
Researcher at Durham University
Publications - 78
Citations - 3898
Ryan Cooke is an academic researcher from Durham University. The author has contributed to research in topics: Metallicity & Galaxy. The author has an hindex of 27, co-authored 67 publications receiving 3320 citations. Previous affiliations of Ryan Cooke include University of California, Santa Cruz & University of Sydney.
Papers
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A one percent determination of the primordial deuterium abundance
TL;DR: In this paper, a near-pristine absorption system, located at a redshift z_abs=2.52564 toward the quasar Q1243+307, based on the combination of archival and new data obtained with the HIRES echelle spectrograph on the Keck telescope was analyzed.
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Precision measures of the primordial abundance of deuterium
TL;DR: In this article, the primordial abundance of deuterium was measured in the very metal-poor (Fe/H] = 2.06726 toward the QSO SDSS J1358+6522.
Journal ArticleDOI
One percent determination of the primordial deuterium abundance.
TL;DR: In this article, a near-pristine absorption system, located at a redshift z_(abs) = 2.52564 toward the quasar Q1243+307, was analyzed using the HIRES echelle spectrograph on the Keck telescope.
Journal ArticleDOI
The most metal-poor damped Lyα systems: insights into chemical evolution in the very metal-poor regime★
TL;DR: In this paper, a high spectral resolution survey of the most metal-poor damped Lyα absorption systems (DLAs) aimed at probing the nature and nucleosynthesis of the earliest generations of stars is presented.
Journal ArticleDOI
The History of R-Process Enrichment in the Milky Way
Sijing Shen,Sijing Shen,Ryan Cooke,Enrico Ramirez-Ruiz,Piero Madau,Lucio Mayer,Javiera Guedes +6 more
TL;DR: In this article, the authors investigated the production sites and enrichment history of r-process elements in the Galaxy, as traced by the [Eu/Fe] ratio, using the high resolution, cosmological zoom-in simulation?Eris.