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, University of Notre Dame
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Results 1 - 46 of 46
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
,
Márcio 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 Meléndez
,
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 Meléndez
,
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: 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 Chanamé
,
MarÃa 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
,
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: 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 Meléndez
,
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
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
Results 1 - 46 of 46
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