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Results 1 - 51 of 51

The $R$-process Alliance: Enrichment of $R$-process Elements in a Simulated Milky Way-like Galaxy
- Volume 19, Issue 42 - article #9
- Yutaka Hirai, Timothy C. Beers, Young Sun Lee, Shinya Wanajo, Ian U. Roederer, Masaomi Tanaka, Masashi Chiba, Takayuki R. Saitoh, Vinicius M. Placco, Terese T. Hansen, Rana Ezzeddine, Anna Frebel, Erika M. Holmbeck, Charli M. Sakari
- https://arxiv.org/abs/2410.11943
Discovery of a Metal-poor Red Giant Star with the Highest Ultralithium Enhancement
- Volume 19, Issue 40 - article #9
- Jeremy Kowkabany, Rana Ezzeddine, Corinne Charbonnel, Ian U. Roederer, Ella Xi Wang, Yangyang Li, Zoe Hackshaw, Timothy C. Beers, Anna Frebel, Terese T. Hansen
- The Astrophysical Journal
- https://doi.org/10.3847/1538-4357/ad6004
The R-process Alliance: Fifth Data Release from the Search for R-process-enhanced Metal-poor Stars in the Galactic Halo with the GTC
- Volume 19, Issue 40 - article #11
- Avrajit Bandyopadhyay, Rana Ezzeddine, Carlos Allende Prieto, Nima Aria, Shivani P. Shah, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Vinicius M. Placco
- The Astrophysical Journal Supplement
- https://doi.org/10.3847/1538-4365/ad6f0f
Discovery of a Metal-Poor Red Giant Star with the Highest Ultra-Lithium Enhancement
- Volume 19, Issue 33 - article #1
- Jeremy Kowkabany, Rana Ezzeddine, Corinne Charbonnel, Ian U. Roederer, Ella Xi Wang, Yangyang Li, Zoe Hackshaw, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika Holmbeck, Vinicius M. Placco, Charli M. Sakari
- https://arxiv.org/abs/2209.02184
The R-Process Alliance: 2MASS J22132050–5137385, the Star with the Highest-known r-process Enhancement at [Eu/Fe] = +2.45
- Volume 19, Issue 33 - article #7
- Ian U. Roederer, Timothy C. Beers, Kohei Hattori, Vinicius M. Placco, Terese T. Hansen, Rana Ezzeddine, Anna Frebel, Erika M. Holmbeck, Charli M. Sakari
- The Astrophysical Journal
- https://doi.org/10.3847/1538-4357/ad57bf
The $R$-Process Alliance: Fifth Data Release from the Search for $R$-Process-Enhanced Metal-poor Stars in the Galactic Halo with the GTC
- Volume 19, Issue 32 - article #8
- Avrajit Bandyopadhyay, Rana Ezzeddine, Carlos Allende Prieto, Nima Aria, Shivani P. Shah, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Vinicius M. Placco, Ian U. Roederer, Charli M. Sakari
- https://arxiv.org/abs/2408.03731
The R-Process Alliance: 2MASS J22132050-5137385, the Star with the Highest-known r-process Enhancement at [Eu/Fe] = +2.45
- Volume 19, Issue 23 - article #4
- Ian U. Roederer, Timothy C. Beers, Kohei Hattori, Vinicius M. Placco, Terese T. Hansen, Rana Ezzeddine, Anna Frebel, Erika M. Holmbeck, Charli M. Sakari
- https://arxiv.org/abs/2406.02691
A chemodynamical analysis of bright metal-poor stars from the HESP-GOMPA survey -- Indications of a non-prevailing site for light r-process elements
- Volume 19, Issue 9 - article #1
- Avrajit Bandyopadhyay, Timothy C Beers, Rana Ezzeddine, Thirupathi Sivarani, Prasanta K Nayak, Jeewan C Pandey, Pallavi Saraf, Antony Susmitha
- https://arxiv.org/abs/2402.17250
The $R$-Process Alliance: Detailed Composition of an $R$-Process Enhanced Star with UV and Optical Spectroscopy. (arXiv:2401.12311v1 [astro-ph.SR])
- Volume 19, Issue 4 - article #9
- Shivani P. Shah, Rana Ezzeddine, Ian U. Roederer, Terese T. Hansen, Vinicius M. Placco, Timothy C. Beers, Anna Frebel, Alexander P. Ji, Erika Holmbeck, Jennifer Marshall, Charli M. Sakari
- http://arxiv.org/abs/2401.12311
GTC Follow-up Observations of Very Metal-Poor Star Candidates from DESI. (arXiv:2306.06321v1 [astro-ph.SR])
- Volume 18, Issue 24 - article #1
- Carlos Allende Prieto, David S. Aguado, Jonay I. González Hernández, Rafael Rebolo, Joan Najita, Christopher J. Manser, Constance Rockosi, Zachary Slepian, Mar Mezcua, Monica Valluri, Rana Ezzeddine, Sergey E. Koposov, Andrew P. Cooper, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Katia Cunha, Siwei Zou, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Shaun Cole, Sarah Eftekharzadeh, Kevin Fanning, Jaime Forero-Romero, Satya Gontcho A Gontcho, Klaus Honscheid, Pascale Jablonka, Robert Kehoe, Theodore Kisner, Martin Landriau, Axel de la Macorra, Aaron Meisner, Ramón Miquel, John Moustakas, Jundan Nie, Claire Poppett, Francisco Prada, Mehdi Rezaie, Graziano Rossi, Eusebio Sánchez, Michael Schubnell, Ray Sharples, Malgorzata Siudek, Verne V. Smith, Gregory Tarlé, et al. (4 additional authors not shown)
- http://arxiv.org/abs/2306.06321
Uranium Abundances and Ages of r-process Enhanced Stars with Novel U ii Lines
- Volume 18, Issue 20 - article #15
- Shivani P. Shah, Rana Ezzeddine, Alexander P. Ji, Terese T. Hansen, Ian U. Roederer, MÃ¡rcio Catelan, Zoe Hackshaw, Erika M. Holmbeck, Timothy C. Beers, Rebecca Surman
- The Astrophysical Journal
- https://doi.org/10.3847/1538-4357/acb8af
The R-Process Alliance: Chemodynamically Tagged Groups. II. An Extended Sample of Halo r-process-enhanced Stars
- Volume 18, Issue 4 - article #10
- Derek Shank, Timothy C. Beers, Vinicius M. Placco, Dmitrii Gudin, Thomas Catapano, Erika M. Holmbeck, Rana Ezzeddine, Ian U. Roederer, Charli M. Sakari, Anna Frebel
- The Astrophysical Journal
- https://doi.org/10.3847/1538-4357/aca322
The R-Process Alliance: Abundance Universality among Some Elements at and between the First and Second R-Process Peaks. (arXiv:2210.15105v1 [astro-ph.SR])
- Volume 17, Issue 42 - article #2
- Ian U. Roederer, John J. Cowan, Marco Pignatari, Timothy C. Beers, Elizabeth A. Den Hartog, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Matthew R. Mumpower, Vinicius M. Placco, Charli M. Sakari, Rebecca Surman, Nicole Vassh
- http://arxiv.org/abs/2210.15105
Discovery of an Ultra Lithium-rich Metal-Poor Red Giant star. (arXiv:2209.02184v1 [astro-ph.SR])
- Volume 17, Issue 35 - article #2
- Jeremy Kowkabany, Rana Ezzeddine, Corinne Charbonnel, Ian U. Roederer, Yangyang Li, Zoe Hackshaw, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika Holmbeck, Vinicius M. Placco, Charli M. Sakari
- http://arxiv.org/abs/2209.02184
The R-Process Alliance: Abundance Universality among Some Elements at and between the First and Second R-Process Peaks
- Volume 17, Issue 34 - article #7
- Ian U. Roederer, John J. Cowan, Marco Pignatari, Timothy C. Beers, Elizabeth A. Den Hartog, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Matthew R. Mumpower
- The Astrophysical Journal
- https://doi.org/10.3847/1538-4357/ac85bc
The emph{R}-Process Alliance: Chemo-Dynamically Tagged Groups II. An Extended Sample of Halo $r$-Process-Enhanced Stars. (arXiv:2208.09712v1 [astro-ph.GA])
- Volume 17, Issue 33 - article #5
- Derek Shank, Timothy C. Beers, Vinicius M. Placco, Dmitrii Gudin, Thomas Catapano, Erika M. Holmbeck, Rana Ezzeddine, Ian U. Roederer, Charli M. Sakari, Anna Frebel, Terese T. Hansen
- http://arxiv.org/abs/2208.09712
The chemical abundance pattern of the extremely metal-poor thin disk star 2MASS J1808-5104 and its origins. (arXiv:2208.03891v1 [astro-ph.GA])
- Volume 17, Issue 31 - article #8
- Mohammad K. Mardini, Anna Frebel, Rana Ezzeddine, Anirudh Chiti, Yohai Meiron, Alexander P. Ji, Vinicius M. Placco, Ian U. Roederer, Jorge Meléndez
- http://arxiv.org/abs/2208.03891
The R-process Alliance: A Nearly Complete R-process Abundance Template Derived from Ultraviolet Spectroscopy of the R-process-enhanced Metal-poor Star HD 222925
- Volume 17, Issue 24 - article #20
- Ian U. Roederer, James E. Lawler, Elizabeth A. Den Hartog, Vinicius M. Placco, Rebecca Surman, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Kohei Hattori
- The Astrophysical Journal Supplement
- https://doi.org/10.3847/1538-4365/ac5cbc
The R-Process Alliance: Chemo-Dynamically Tagged Groups of Halo $r$-Process-Enhanced Stars Reveal a Shared Chemical-Evolution History. (arXiv:2012.13808v1 [astro-ph.GA])
- Volume 16, Issue 1 - article #3
- Dmitrii Gudin, Derek Shank, Timothy C. Beers, Zhen Yuan, Guilherme Limberg, Ian U. Roederer, Vinicius Placco, Erika M. Holmbeck, Sarah Dietz, Kaitlin C. Rasmussen, Terese T. Hansen, Charli M. Sakari, Rana Ezzeddine, Anna Frebel
- http://arxiv.org/abs/2012.13808
Detection of Pb II in the Ultraviolet Spectra of Three Metal-poor Stars
- Volume 15, Issue 42 - article #8
- Ian U. Roederer, James E. Lawler, Erika M. Holmbeck, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Inese I. Ivans, Amanda I. Karakas, Vinicius M. Placco,, Charli M. Sakari
- The Astrophysical Journal Letters
- http://iopscience.iop.org/2041-8205/902/1/L24
Detection of Pb II in the Ultraviolet Spectra of Three Metal-Poor Stars. (arXiv:2009.14251v1 [astro-ph.SR])
- Volume 15, Issue 40 - article #3
- Ian U. Roederer, James E. Lawler, Erika M. Holmbeck, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Inese I. Ivans, Amanda I. Karakas, Vinicius M. Placco, Charli M. Sakari
- http://arxiv.org/abs/2009.14251
The R -Process Alliance: First Magellan/MIKE Release from the Southern Search for R -process-enhanced Stars
- Volume 15, Issue 32 - article #12
- Rana Ezzeddine, Kaitlin Rasmussen, Anna Frebel, Anirudh Chiti, Karina Hinojisa, Vinicius M. Placco, Alexander P. Ji, Timothy C. Beers, Terese T. Hansen, Ian U. Roederer, Charli M. Sakari,, Jorge Melendez
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/898/2/150
The R -Process Alliance: Fourth Data Release from the Search for R -process-enhanced Stars in the Galactic Halo
- Volume 15, Issue 32 - article #15
- Erika M. Holmbeck, Terese T. Hansen, Timothy C. Beers, Vinicius M. Placco, Devin D. Whitten, Kaitlin C. Rasmussen, Ian U. Roederer, Rana Ezzeddine, Charli M. Sakari, Anna Frebel, Maria R. Drout, Joshua D. Simon, Ian B. Thompson, Joss Bland-Hawthorn, Brad K. Gibson, Eva K. Grebel, Georges Kordopatis, Andrea Kunder, Jorge MelÃ©ndez, Julio F. Navarro, Warren A. Reid, George Seabroke, Matthias Steinmetz, Fred Watson,, Rosemary F. Ä . Wyse
- The Astrophysical Journal Supplement Series
- http://iopscience.iop.org/0067-0049/249/2/30
The R -Process Alliance: A Very Metal-poor, Extremely r -process-enhanced Star with [Eu/Fe] = + 2.2, and the Class of r- III Stars
- Volume 15, Issue 30 - article #11
- Madelyn Cain, Anna Frebel, Alexander P. Ji, Vinicius M. Placco, Rana Ezzeddine, Ian U. Roederer, Kohei Hattori, Timothy C. Beers, Jorge MelÃ©ndez, Terese T. Hansen,, Charli M. Sakari
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/898/1/40
The R -process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5−455510
- Volume 15, Issue 28 - article #17
- Vinicius M. Placco, Rafael M. Santucci, Zhen Yuan, Mohammad K. Mardini, Erika M. Holmbeck, Xilu Wang, Rebecca Surman, Terese T. Hansen, Ian U. Roederer, Timothy C. Beers, Arthur Choplin, Alexander P. Ji, Rana Ezzeddine, Anna Frebel, Charli M. Sakari, Devin D. Whitten,, Joseph Zepeda
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/897/1/78
The $R$-Process Alliance: Fourth Data Release from the Search for $r$-Process-Enhanced Stars in the Galactic Halo. (arXiv:2007.00749v1 [astro-ph.SR])
- Volume 15, Issue 27 - article #4
- Erika M. Holmbeck, Terese T. Hansen, Timothy C. Beers, Vinicius M. Placco, Devin D. Whitten, Kaitlin C. Rasmussen, Ian U. Roederer, Rana Ezzeddine, Charli M. Sakari, Anna Frebel, Maria R. Drout, Joshua D. Simon, Ian B. Thompson, Joss Bland-Hawthorn, Brad K. Gibson, Eva K. Grebel, Georges Kordopatis, Andrea Kunder, Jorge Melendez, Julio F. Navarro, Warren A.Reid, George Seabroke, Matthias Steinmetz, Fred Watson, Rosemary F.G. Wyse
- http://arxiv.org/abs/2007.00749
The R-process Alliance: First Magellan/MIKE Release from the Southern Search for R-Process-enhanced Stars. (arXiv:2006.07731v1 [astro-ph.SR])
- Volume 15, Issue 25 - article #14
- Rana Ezzeddine, Kaitlin Rasmussen, Anna Frebel, Anirudh Chiti, Karina Hinojisa, Vinicius M. Placco, Ian U. Roederer, Alexander P. Ji, Timothy C. Beers, Terese T. Hansen, Charli M. Sakari, Jorge Melendez
- http://arxiv.org/abs/2006.07731
The R-Process Alliance: J1521-3538, a very metal-poor, extremely r-process-enhanced star with [Eu/Fe]=+2.2, and the class of r-III stars. (arXiv:2006.08080v1 [astro-ph.SR])
- Volume 15, Issue 25 - article #15
- Madelyn Cain (MIT, JINA), Anna Frebel (MIT, JINA), Alexander P. Ji (Carnegie), Vinicius M. Placco (Notre Dame, JINA), Rana Ezzeddine (MIT, JINA), Ian U. Roederer (U Michigan), Kohei Hattori (U Michigan, Carnegie Mellon), Timothy C. Beers (Notre Dame, JINA), Jorge Mélendez (Sao Paulo), Terese T. Hansen (Carnegie), Charli M. Sakari (San Francisco State U, JINA)
- http://arxiv.org/abs/2006.08080
The R-Process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510
- Volume 15, Issue 24 - article #17
- Vinicius M. Placco, Rafael M. Santucci, Zhen Yuan, Mohammad K. Mardini, Erika M. Holmbeck, Xilu Wang, Rebecca Surman, Terese T. Hansen, Ian U. Roederer, Timothy C. Beers, Arthur Choplin, Alexander P. Ji, Rana Ezzeddine, Anna Frebel, Charli M. Sakari, Devin D. Whitten, Joseph Zepeda
- http://arxiv.org/abs/2006.04538
Evidence for an Aspherical Population III Supernova Explosion Inferred from the Hyper-metal-poor Star HE 1327–2326
- Volume 14, Issue 19 - article #8
- Rana Ezzeddine, Anna Frebel, Ian U. Roederer, Nozomu Tominaga, Jason Tumlinson, Miho Ishigaki, Kenâichi Nomoto, Vinicius M. Placco,, Wako Aoki
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/876/2/97
Evidence for an aspherical Population III supernova explosion inferred from the hyper metal-poor star HE1327-2326. (arXiv:1904.03211v1 [astro-ph.SR])
- Volume 14, Issue 15 - article #7
- Rana Ezzeddine, Anna Frebel, Ian U. Roederer, Nozomu Tominaga, Jason Tumlinson, Miho Ishigaki, Ken'ichi Nomoto, Vinicius M. Placco, Wako Aoki
- http://arxiv.org/abs/1904.03211
The R -Process Alliance: Discovery of a Low- α , r -process-enhanced Metal-poor Star in the Galactic Halo
- Volume 14, Issue 14 - article #19
- 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 MatijeviÄ, Rosemary F. G. Wyse, Joss Bland-Hawthorn, Cristina Chiappini, Kenneth C. Freeman, Brad K. Gibson, Eva K. Grebel, Amina Helmi, Georges Kordopatis, Andrea Kunder, Julio Navarro, Warren Reid, George Seabroke, Matthias Steinmetz,, Fred Watson
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/874/2/148
The R-Process Alliance: Discovery of a low-alpha, r-Process-Enhanced Metal-Poor Star in the Galactic Halo. (arXiv:1903.01480v1 [astro-ph.SR])
- Volume 14, Issue 10 - article #12
- 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 Matijevic, Rosemary F.G. Wyse, Joss Bland-Hawthorn, Cristina Chiappini, Kenneth C. Freeman, Brad K. Gibson, Eva K. Grebel, Amina Helmi, Georges Kordopatis, Andrea Kunder, Julio Navarro, Warren Reid, George Seabroke, Matthias Steinmetz, Fred Watson
- http://arxiv.org/abs/1903.01480
Chemical Abundance Signature of J0023+0307: A Second-generation Main-sequence Star with [Fe/H] < −6
- Volume 14, Issue 5 - article #3
- Anna Frebel, Alexander P. Ji, Rana Ezzeddine, Terese T. Hansen, Anirudh Chiti, Ian B. Thompson,, Thibault Merle
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/871/2/146
The R-Process Alliance: Spectroscopic Follow-up of Low-metallicity Star Candidates from the Best & Brightest Survey
- Volume 14, Issue 3 - article #15
- Vinicius M. Placco, Rafael M. Santucci, Timothy C. Beers, Julio ChanamÃ©, MarÃa Paz SepÃºlveda, Johanna Coronado, Silvia Rossi, Young Sun Lee, Else Starkenburg, Kris Youakim, Manuel Barrientos, Rana Ezzeddine, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Alexander P. Ji, Kaitlin C. Rasmussen, Ian U. Roederer, Charli M. Sakari,, Devin D. Whitten
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/870/2/122
The R -Process Alliance: A Comprehensive Abundance Analysis of HD 222925, a Metal-poor Star with an Extreme R -process Enhancement of [Eu/H] = −0.14
- Volume 13, Issue 40 - article #13
- Ian U. Roederer, Charli M. Sakari, Vinicius M. Placco, Timothy C. Beers, Rana Ezzeddine, Anna Frebel,, Terese T. Hansen
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/865/2/129
The R-Process Alliance: First Release from the Northern Search for r-Process Enhanced Metal-Poor Stars in the Galactic Halo. (arXiv:1809.09156v1 [astro-ph.SR])
- Volume 13, Issue 39 - article #7
- 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, Kim A. Venn, Christopher Evan Davis, Gal Matijevic, Rosemary F.G. Wyse, Joss Bland-Hawthorn, Cristina Chiappini, Kenneth C. Freeman, Brad K. Gibson, Eva K. Grebel, Amina Helmi, Georges Kordopatis, Andrea Kunder, Julio Navarro, Warren Reid, George Seabroke, Matthias Steinmetz, Fred Watson
- http://arxiv.org/abs/1809.09156
FRIB and the GW170817 Kilonova. (arXiv:1809.00703v1 [astro-ph.HE])
- Volume 13, Issue 36 - article #2
- A. Aprahamian, R. Surman, A. Frebel, G.C. McLaughlin, A. Arcones, A.B. Balantekin, J. Barnes, Timothy C. Beers, Erika M. Holmbeck, Jinmi Yoon, Maxime Brodeur, T.M. Sprouse, Nicole Vassh, Jolie A. Cizewski, Jason A. Clark, Benoit Cote, Sean M. Couch, M. Eichler, Jonathan Engel, Rana Ezzeddine, George M. Fuller, Samuel A. Giuliani, Robert Grzywacz, Sophia Han, C.J. Horowitz, Anu Kankainen, Oleg Korobkin, A.A. Kwiatkowski, J.E. Lawler, Jonas Lippuner, Elena Litvinova, G.J. Mathews, M.R. Mumpower, S. Naimi, W. Nazarewicz, Evan O'Connor, Brian W. O'Shea, Albino Perego, G. Perdikakis, David Radice, Sherwood Richers, Luke F. Roberts, Caroline Robin, Ian U. Roederer, Daniel M. Siegel, Nicolas Schunck, A. Spyrou, Yong-Lin Zhu
- http://arxiv.org/abs/1809.00703
The R-Process Alliance: A Comprehensive Abundance Analysis of HD 222925, a Metal-Poor Star with an Extreme R-Process Enhancement of [Eu/H] = -0.14. (arXiv:1808.09469v1 [astro-ph.SR])
- Volume 13, Issue 35 - article #9
- Ian U. Roederer (U. Michigan, JINA-CEE), Charli M. Sakari (U. Washington), Vinicius M. Placco (U. Notre Dame, JINA-CEE), Timothy C. Beers (U. Notre Dame, JINA-CEE), Rana Ezzeddine (MIT, JINA-CEE), Anna Frebel (MIT, JINA-CEE), Terese T. Hansen (Carnegie Observatories)
- http://arxiv.org/abs/1808.09469
The R -Process Alliance: Chemical Abundances for a Trio of r -process-enhanced Stars—One Strong, One Moderate, and One Mild
- Volume 13, Issue 35 - article #15
- Madelyn Cain, Anna Frebel, Maude Gull, Alexander P. Ji, Vinicius M. Placco, Timothy C. Beers, Jorge MelÃ©ndez, Rana Ezzeddine, Andrew R. Casey, Terese T. Hansen, Ian U. Roederer,, Charli Sakari
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/864/1/43
Revisiting the Iron Abundance in the Hyper Iron-poor Star HE 1327–2326 with UV COS/ HST Data
- Volume 13, Issue 34 - article #9
- Rana Ezzeddine, Anna Frebel
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/863/2/168
The R -Process Alliance: Discovery of the First Metal-poor Star with a Combined r - and s -process Element Signature
- Volume 13, Issue 32 - article #13
- Maude Gull, Anna Frebel, Madelyn G. Cain, Vinicius M. Placco, Alexander P. Ji, Carlo Abate, Rana Ezzeddine, Amanda I. Karakas, Terese T. Hansen, Charli Sakari, Erika M. Holmbeck, Rafael M. Santucci, Andrew R. Casey,, Timothy C. Beers
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/862/2/174
Revisiting the iron abundance in the hyper iron-poor star HE$~$1327-2326 with UV COS/$HST$ data. (arXiv:1807.06153v1 [astro-ph.SR])
- Volume 13, Issue 29 - article #10
- Rana Ezzeddine, Anna Frebel
- http://arxiv.org/abs/1807.06153
The R-Process Alliance: Chemical Abundances for a Trio of R-Process-Enhanced Stars -- One Strong, One Moderate, One Mild. (arXiv:1807.03734v1 [astro-ph.SR])
- Volume 13, Issue 28 - article #13
- Madelyn Cain (MIT), Anna Frebel (MIT), Maude Gull (MIT), Alexander P. Ji (Carngie), Vinicius M. Placco (Notre Dame), Timothy C. Beers (Notre Dame), Jorge Melendez (Sao Paulo), Rana Ezzeddine (MIT, JINA), Andrew R. Casey (Monash), Terese T. Hansen (Carnegie), Ian U. Roederer (U Michigan), Charli Sakari (U Washington)
- http://arxiv.org/abs/1807.03734
The R-Process Alliance: Discovery of the first metal-poor star with a combined r- and s-process element signature. (arXiv:1806.00645v1 [astro-ph.SR])
- Volume 13, Issue 23 - article #5
- Maude Gull (MIT), Anna Frebel (MIT, JINA), Madelyn G. Cain (MIT), Vinicius M. Placco (Notre Dame, JINA), Alexander P. Ji (carnegie), Carlo Abate (Bonn), Rana Ezzeddine (JINA, MIT) Amanda I. Karakas (Monash), Terese T. Hansen (Carnegie), Charli Sakari (UW), Erika M. Holmbeck (Notre Dame, JINA), Rafael M. Santucci (UGoias), Andrew R. Casey (Monash), Timothy C. Beers (Notre Dame, JINA)
- http://arxiv.org/abs/1806.00645
Ultra-metal-poor Stars: Spectroscopic Determination of Stellar Atmospheric Parameters Using Iron Non-LTE Line Abundances
- Volume 12, Issue 40 - article #14
- Rana Ezzeddine, Anna Frebel,, Bertrand Plez
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/847/2/142
RAVE J203843.2–002333: The First Highly R-process-enhanced Star Identified in the RAVE Survey
- Volume 12, Issue 29 - article #21
- Vinicius M. Placco, Erika M. Holmbeck, Anna Frebel, Timothy C. Beers, Rebecca A. Surman, Alexander P. Ji, Rana Ezzeddine, Sean D. Points, Catherine C. Kaleida, Terese T. Hansen, Charli M. Sakari,, Andrew R. Casey
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/844/1/18
RAVE J203843.2-002333: The first highly r-process-enhanced star identified in the RAVE survey. (arXiv:1706.02934v1 [astro-ph.SR])
- Volume 12, Issue 24 - article #10
- Vinicius M. Placco, Erika M. Holmbeck, Anna Frebel, Timothy C. Beers, Rebecca A. Surman, Alexander P. Ji, Rana Ezzeddine, Sean D. Points, Catherine C. Kaleida, Terese T. Hansen, Charli M. Sakari, Andrew R. Casey
- http://arxiv.org/abs/1706.02934
Ultra metal-poor stars: Spectroscopic determination of stellar atmospheric parameters using iron Non-LTE line abundances. (arXiv:1612.06309v1 [astro-ph.SR])
- Volume 11, Issue 52 - article #5
- Rana Ezzeddine, Anna Frebel, Bertrand Plez
- http://arxiv.org/abs/1612.06309
CHEMICAL DIVERSITY IN THE ULTRA-FAINT DWARF GALAXY TUCANA II
- Volume 11, Issue 47 - article #23
- Alexander P. Ji, Anna Frebel, Rana Ezzeddine,, Andrew R. Casey
- The Astrophysical Journal Letters
- http://iopscience.iop.org/2041-8205/832/1/L3
Chemical Diversity in the Ultra-faint Dwarf Galaxy Tucana II. (arXiv:1609.02915v1 [astro-ph.GA])
- Volume 11, Issue 38 - article #4
- Alexander P. Ji, Anna Frebel, Rana Ezzeddine, Andrew R. Casey
- http://arxiv.org/abs/1609.02915

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