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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The most metal-poor damped Lyman-alpha 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 Lyman-alpha absorption systems (DLAs) aimed at probing the nature and nucleosynthesis of the earliest generations of stars is presented.
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The cold veil of the Milky Way stellar halo.
Alis J. Deason,Vasily Belokurov,Nick Evans,Sergey E. Koposov,Sergey E. Koposov,Ryan Cooke,Jorge Peñarrubia,Chervin F. P. Laporte,Michael Fellhauer,Matthew G. Walker,Edward W. Olszewski +10 more
TL;DR: In this article, the authors build a sample of distant (D > 80kpc) stellar halo stars with measured radial velocities using the deep, but wide, multi-epoch Sloan Digital Sky Survey photometry.
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A new, precise measurement of the primordial abundance of deuterium
Max Pettini,Ryan Cooke +1 more
TL;DR: In this article, the metal-poor (Z � 1/100 Z� ) damped Lyman α system (DLA) at redshift zabs = 3.049 84 in the zem � 3.030 QSO SDSS J1419+0829 has near-ideal properties for an accurate determination of the primordial abundance of deuterium.
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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 paper, the authors investigate 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''.
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Carbon-enhanced Metal-poor Stars: Relics from the Dark Ages
Ryan Cooke,Piero Madau +1 more
TL;DR: In this paper, the authors use detailed nucleosynthesis calculations and a realistic prescription for the environment of the first stars to explore the first episodes of chemical enrichment that occurred during the dark ages.