Papers

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2020 Anirudh Chiti

, Anna Frebel

, Helmut Jerjen

, Dongwon Kim

, John E. Norris

Stellar Metallicities from SkyMapper Photometry I: A Study of the Tucana II Ultra-faint Dwarf Galaxy

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2019 Erika M. Holmbeck

, Anna Frebel

, G. C. McLaughlin

, Matthew R. Mumpower

, Trevor M. Sprouse

, Rebecca Surman

Actinide-rich and Actinide-poor r-process-enhanced Metal-poor Stars Do Not Require Separate r-process Progenitors

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This paper was not found in any repository; the policy of its publisher is unknown or unclear.

Terese T. Hansen, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Erika Holmbeck, Alexander Pung Ji, Jennifer Marshall, Vinicius Placco

, Ian U. Roederer, Charli Sakari

Testing r-process nucleosynthesis models with two r-process enhanced stars

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Ian Roederer, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Alexander P. Ji, Terese T. Hansen, Vinicius M. Placco

, Charli M. Sakari

The astrophysical r-process and the origin of the heaviest elements

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Anirudh Chiti

, Anna Frebel

Four Metal-poor Stars in the Sagittarius Dwarf Spheroidal Galaxy

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Charli M. Sakari

, Ian U. Roederer

, Vinicius M. Placco

, Timothy C. Beers

, Rana Ezzeddine

, Anna Frebel

, Terese Hansen

, Christopher Sneden

, John J. Cowan, George Wallerstein, Elizabeth M. Farrell, Kim A. Venn

, Gal Matijevič, Rosemary F. G. Wyse, Joss Bland-Hawthorn

and 12 other authors

The R-Process Alliance: Discovery of a Low-α, r-process-enhanced Metal-poor Star in the Galactic Halo

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Alexander P. Ji, Rachel Beaton, Sukanya Chakrabarti, Gina Duggan, Anna Frebel, Marla Geha, Matthew Hosek, Evan Kirby, Ting Li

, Ian Roederer, Joshua Simon

Astro2020 Science White Paper: Local Dwarf Galaxy Archaeology

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Kaley Brauer

, Alexander P. Ji

, Anna Frebel

, Gregory A. Dooley

, Facundo A. Gómez, Brian W. O’Shea

The Origin of r-process Enhanced Metal-poor Halo Stars In Now-destroyed Ultra-faint Dwarf Galaxies

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Anna Frebel

, Alexander P. Ji

, Rana Ezzeddine

, Terese T. Hansen

, Anirudh Chiti

, Ian B. Thompson, Thibault Merle

Chemical Abundance Signature of J0023+0307: A Second-generation Main-sequence Star with [Fe/H] < −6

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Vinicius M. Placco

, Rafael M. Santucci

, Timothy C. Beers

, Julio Chanamé, María Paz Sepúlveda, Johanna Coronado, Silvia Rossi, Young Sun Lee

, Else Starkenburg, Kris Youakim, Manuel Barrientos, Rana Ezzeddine

, Anna Frebel

, Terese T. Hansen

, Erika M. Holmbeck

and 5 other authors

The R-Process Alliance: Spectroscopic Follow-up of Low-metallicity Star Candidates from the Best & Brightest Survey

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Alexander P. Ji

, Joshua D. Simon, Anna Frebel

, Kim A. Venn

, Terese T. Hansen

Chemical Abundances in the Ultra-faint Dwarf Galaxies Grus I and Triangulum II: Neutron-capture Elements as a Defining Feature of the Faintest Dwarfs

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2018 Charli M. Sakari

, Vinicius M. Placco

, Elizabeth M. Farrell, Ian U. Roederer

, George Wallerstein, Timothy C. Beers

, Rana Ezzeddine

, Anna Frebel

, Terese Hansen

, Erika M. Holmbeck

, Christopher Sneden

, John J. Cowan, Kim A. Venn

, Christopher Evan Davis, Gal Matijevič and 14 other authors

The R-Process Alliance: First Release from the Northern Search for r-process-enhanced Metal-poor Stars in the Galactic Halo

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Abdu Abohalima, Anna Frebel

JINAbase—A Database for Chemical Abundances of Metal-poor Stars

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Ian U. Roederer

, Charli M. Sakari

, Vinicius M. Placco

, Timothy C. Beers

, Rana Ezzeddine

, Anna Frebel

, Terese T. Hansen

TheR-Process Alliance: A Comprehensive Abundance Analysis of HD 222925, a Metal-poor Star with an ExtremeR-process Enhancement of [Eu/H] = −0.14

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Rana Ezzeddine

, Anna Frebel

Revisiting the Iron Abundance in the Hyper Iron-poor Star HE 1327–2326 with UV COS/HST Data

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Anna Frebel

From Nuclei to the Cosmos: Tracing Heavy-Element Production with the Oldest Stars

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