The R-process Alliance: First Release from the Southern Search for R-process-enhanced Stars in the Galactic Halo
Hansen, Terese T., Holmbeck, Erika M., Beers, Timothy C., Placco, Vinicius M., Roederer, Ian U., Frebel, Anna, Sakari, Charli M., Simon, Joshua D., Thompson, Ian B.
Published in The Astrophysical journal (10.05.2018)
Published in The Astrophysical journal (10.05.2018)
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Journal Article
Dynamical Relics of the Ancient Galactic Halo
Yuan, Zhen, Myeong, G. C., Beers, Timothy C., Evans, N. W., Lee, Young Sun, Banerjee, Projjwal, Gudin, Dmitrii, Hattori, Kohei, Li, Haining, Matsuno, Tadafumi, Placco, Vinicius M., Smith, M. C., Whitten, Devin D., Zhao, Gang
Published in The Astrophysical journal (01.03.2020)
Published in The Astrophysical journal (01.03.2020)
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Journal Article
OBSERVATIONAL CONSTRAINTS ON FIRST-STAR NUCLEOSYNTHESIS. I. EVIDENCE FOR MULTIPLE PROGENITORS OF CEMP-NO STARS
Yoon, Jinmi, Beers, Timothy C., Placco, Vinicius M., Rasmussen, Kaitlin C., Carollo, Daniela, He, Siyu, Hansen, Terese T., Roederer, Ian U., Zeanah, Jeff
Published in The Astrophysical journal (10.12.2016)
Published in The Astrophysical journal (10.12.2016)
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Journal Article
Evidence for an Aspherical Population III Supernova Explosion Inferred from the Hyper-metal-poor Star HE 1327–2326
Ezzeddine, Rana, Frebel, Anna, Roederer, Ian U., Tominaga, Nozomu, Tumlinson, Jason, Ishigaki, Miho, Nomoto, Ken’ichi, Placco, Vinicius M., Aoki, Wako
Published in The Astrophysical journal (10.05.2019)
Published in The Astrophysical journal (10.05.2019)
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Journal Article
Metal-poor Stars Observed with the Automated Planet Finder Telescope. II. Chemodynamical Analysis of Six Low-metallicity Stars in the Halo System of the Milky Way
Mardini, Mohammad K., Placco, Vinicius M., Taani, Ali, Li, Haining, Zhao, Gang
Published in The Astrophysical journal (01.09.2019)
Published in The Astrophysical journal (01.09.2019)
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Journal Article
Dynamically Tagged Groups of Metal-poor Stars from the Best and Brightest Survey
Shank, Derek, Beers, Timothy C., Placco, Vinicius M., Limberg, Guilherme, Jaques, Emma, Yuan, Zhen, Schlaufman, Kevin C., Casey, Andrew R., Huang, Yang, Lee, Young Sun, Hattori, Kohei, Santucci, Rafael M.
Published in The Astrophysical journal (01.02.2022)
Published in The Astrophysical journal (01.02.2022)
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Journal Article
IDENTIFICATION OF NEODYMIUM IN THE APOGEE H-BAND SPECTRA
Hasselquist, Sten, Shetrone, Matthew, Cunha, Katia, Smith, Verne V., Holtzman, Jon, Lawler, J. E., Prieto, Carlos Allende, Beers, Timothy C., Chojnowski, Drew, Fernández-Trincado, J. G., García-Hernández, D. A., Hearty, Fred R., Majewski, Steven R., Pereira, C. B., Placco, Vinicius M., Villanova, Sandro, Zamora, Olga
Published in The Astrophysical journal (10.12.2016)
Published in The Astrophysical journal (10.12.2016)
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Journal Article
The R-Process Alliance: First Magellan/MIKE Release from the Southern Search for R-process-enhanced Stars
Ezzeddine, Rana, Rasmussen, Kaitlin, Frebel, Anna, Chiti, Anirudh, Hinojisa, Karina, Placco, Vinicius M., Ji, Alexander P., Beers, Timothy C., Hansen, Terese T., Roederer, Ian U., Sakari, Charli M., Melendez, Jorge
Published in The Astrophysical journal (01.08.2020)
Published in The Astrophysical journal (01.08.2020)
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Journal Article
The R-Process Alliance: First Release from the Northern Search for r-process-enhanced Metal-poor Stars in the Galactic Halo
Sakari, Charli M., Placco, Vinicius M., Farrell, Elizabeth M., Roederer, Ian U., Wallerstein, George, Beers, Timothy C., Ezzeddine, Rana, Frebel, Anna, Hansen, Terese, Holmbeck, Erika M., Sneden, Christopher, Cowan, John J., Venn, Kim A., Davis, Christopher Evan, Matijevi, Gal, Wyse, Rosemary F. G., Bland-Hawthorn, Joss, Chiappini, Cristina, Freeman, Kenneth C., Gibson, Brad K., Grebel, Eva K., Helmi, Amina, Kordopatis, Georges, Kunder, Andrea, Navarro, Julio, Reid, Warren, Seabroke, George, Steinmetz, Matthias, Watson, Fred
Published in The Astrophysical journal (01.12.2018)
Published in The Astrophysical journal (01.12.2018)
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Journal Article
Discovery of a New Stellar Subpopulation Residing in the (Inner) Stellar Halo of the Milky Way
Fernández-Trincado, José G., Beers, Timothy C., Placco, Vinicius M., Moreno, Edmundo, Alves-Brito, Alan, Minniti, Dante, Tang, Baitian, Pérez-Villegas, Angeles, Reylé, Céline, Robin, Annie C., Villanova, Sandro
Published in Astrophysical journal. Letters (20.11.2019)
Published in Astrophysical journal. Letters (20.11.2019)
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Journal Article
G64-12 AND G64-37 ARE CARBON-ENHANCED METAL-POOR STARS
Placco, Vinicius M., Beers, Timothy C., Reggiani, Henrique, Meléndez, Jorge
Published in Astrophysical journal. Letters (01.10.2016)
Published in Astrophysical journal. Letters (01.10.2016)
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Journal Article
Galactic Archeology with the AEGIS Survey: The Evolution of Carbon and Iron in the Galactic Halo
Yoon, Jinmi, Beers, Timothy C., Dietz, Sarah, Lee, Young Sun, Placco, Vinicius M., Costa, Gary Da, Keller, Stefan, Owen, Christopher I., Sharma, Mahavir
Published in The Astrophysical journal (10.07.2018)
Published in The Astrophysical journal (10.07.2018)
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Journal Article
Chemodynamically Tagged Groups of CEMP Stars in the Halo of the Milky Way. I. Untangling the Origins of CEMP-s and CEMP-no Stars
Zepeda, Joseph, Beers, Timothy C., Placco, Vinicius M., Shank, Derek, Gudin, Dmitrii, Hirai, Yutaka, Mardini, Mohammad, Pifer, Colin, Catapano, Thomas, Calagna, Sean
Published in The Astrophysical journal (01.04.2023)
Published in The Astrophysical journal (01.04.2023)
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Journal Article
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
Roederer, Ian U., Sakari, Charli M., Placco, Vinicius M., Beers, Timothy C., Ezzeddine, Rana, Frebel, Anna, Hansen, Terese T.
Published in The Astrophysical journal (01.10.2018)
Published in The Astrophysical journal (01.10.2018)
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Journal Article
CARBON-ENHANCED METAL-POOR STARS IN SDSS/SEGUE. I. CARBON ABUNDANCE ESTIMATION AND FREQUENCY OF CEMP STARS
Lee, Young Sun, Beers, Timothy C, Masseron, Thomas, Plez, Bertrand, Rockosi, Constance M, Sobeck, Jennifer, YANNY, BRIAN, LUCATELLO, SARA, SIVARANI, THIRUPATHI, PLACCO, VINICIUS M, Carollo, Daniela
Published in The Astronomical journal (17.10.2013)
Published in The Astronomical journal (17.10.2013)
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Journal Article
Spectroscopic Validation of Low-metallicity Stars from RAVE
Placco, Vinicius M., Beers, Timothy C., Santucci, Rafael M., Chanamé, Julio, Sepúlveda, María Paz, Coronado, Johanna, Points, Sean D., Kaleida, Catherine C., Rossi, Silvia, Kordopatis, Georges, Lee, Young Sun, Matijevi, Gal, Frebel, Anna, Hansen, Terese T., Holmbeck, Erika M., Rasmussen, Kaitlin C., Roederer, Ian U., Sakari, Charli M., Whitten, Devin D.
Published in The Astronomical journal (01.06.2018)
Published in The Astronomical journal (01.06.2018)
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Journal Article
The chemical abundance pattern of the extremely metal-poor thin disc star 2MASS J1808−5104 and its origins
Mardini, Mohammad K, Frebel, Anna, Ezzeddine, Rana, Chiti, Anirudh, Meiron, Yohai, Ji, Alexander P, Placco, Vinicius M, Roederer, Ian U, Meléndez, Jorge
Published in Monthly notices of the Royal Astronomical Society (31.10.2022)
Published in Monthly notices of the Royal Astronomical Society (31.10.2022)
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Journal Article