The R-Process Alliance: Chemodynamically Tagged Groups of Halo r-process-enhanced Stars Reveal a Shared Chemical-evolution History

by Gudin, Dmitrii, Shank, Derek, Beers, Timothy C, Yuan, Zhen, Limberg, Guilherme, Roederer, Ian U, Placco, Vinicius, Holmbeck, Erika M, Dietz, Sarah, Rasmussen, Kaitlin C, Hansen, Terese T, Sakari, Charli M, Ezzeddine, Rana, Frebel, Anna
Published 2022

Detection of Pb II in the Ultraviolet Spectra of Three Metal-poor Stars

by Roederer, Ian U., Lawler, James E., Holmbeck, Erika M., Beers, Timothy C., Ezzeddine, Rana, Frebel, Anna, Hansen, Terese T., Ivans, Inese I., Karakas, Amanda I., Placco, Vinicius M., Sakari, Charli M.
Published 2022

Metal-poor Stars Observed with the Southern African Large Telescope

by Rasmussen, Kaitlin C., Zepeda, Joseph, Beers, Timothy C., Placco, Vinicius M., Depagne, Éric, Frebel, Anna, Dietz, Sarah, Hartwig, Tilman
Published 2022

The R-Process Alliance: Chemodynamically Tagged Groups of Halo r-process-enhanced Stars Reveal a Shared Chemical-evolution History

by Gudin, Dmitrii, Shank, Derek, Beers, Timothy C., Yuan, Zhen, Limberg, Guilherme, Roederer, Ian U., Placco, Vinicius, Holmbeck, Erika M., Dietz, Sarah, Rasmussen, Kaitlin C., Hansen, Terese T., Sakari, Charli M., Ezzeddine, Rana, Frebel, Anna
Published 2022

BRIGHT METAL-POOR STARS FROM THE HAMBURG/ESO SURVEY. II. A CHEMODYNAMICAL ANALYSIS

by Beers, Timothy C., Placco, Vinicius M., Carollo, Daniela, Rossi, Silvia, Lee, Young Sun, Norris, John E., Dietz, Sarah, Masseron, Thomas, Frebel, Anna L.
Published 2017

Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys

by Limberg, Guilherme, Rossi, Silvia, Beers, Timothy C, Perottoni, Hélio D, Pérez-Villegas, Angeles, Santucci, Rafael M, Abuchaim, Yuri, Placco, Vinicius M, Lee, Young Sun, Christlieb, Norbert, Norris, John E, Bessell, Michael S, Ryan, Sean G, Wilhelm, Ronald, Rhee, Jaehyon, Frebel, Anna
Published 2022

Characterizing r-Process Sites through Actinide Production

by Holmbeck, Erika M, Surman, Rebecca, Frebel, Anna, McLaughlin, GC, Mumpower, Matthew R, Sprouse, Trevor M, Kawano, Toshihiko, Vassh, Nicole, Beers, Timothy C
Published 2022

Detection of the Second R-Process Peak Element Tellurium in Metal-Poor Stars

by Roederer, Ian U., Lawler, James E., Cowan, John J., Beers, Timothy C., Frebel, Anna L., Ivans, Inese I., Schatz, Hendrik, Sobeck, Jennifer S., Sneden, Christopher
Published 2013

SDSS J103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger

by Knapp, Gillian R., Tremonti, Christy A., Rockosi, Constance M., Schlegel, David J., Yanny, Brian, Beers, Timothy C., Allende Prieto, Carlos, Wilhelm, Ron, Lupton, Robert H., Gunn, James E., Niederste-Ostholt, Martin, Schneider, Donald P., Covey, Kevin, Seth, Anil, Ivezic, Zeljko, Eisenstein, Daniel J., Helmboldt, Joe, Finkbeiner, Douglas, Padmanabhan, Nikhil, Kleinman, Scot J., Long, Dan, Snedden, Stephanie A., Nitta, Atsuko, Harvanek, Michael, Krzesinski, Jurek, Brewington, Howard J., Barentine, John C., Newman, Peter R., Nielsen, Jr., Eric H., Fukugita, Masataka, Brinkmann, J.
Published 2017

The Most Metal-Poor Stars. III. The Metallicity Distribution Function and CEMP Fraction

by Frebel, Anna L., Yong, David, Norris, John E., Bessell, M. S., Christlieb, N., Asplund, M., Beers, Timothy C., Barklem, P. S., Ryan, S. G.
Published 2013

The Most Metal-Poor Stars. II. Chemical Abundances of 190 Metal-Poor Stars Including 10 New Stars With [Fe/H] ≤ -3.5

by Frebel, Anna L., Yong, David, Bessell, M. S., Christlieb, N., Asplund, M., Beers, Timothy C., Barklem, P. S., Ryan, S. G., Norris, John E.
Published 2013

The Most Metal-Poor Stars. I. Discovery, Data, and Atmospheric Parameters

by Frebel, Anna L., Norris, John E., Bessell, M. S., Yong, David, Christlieb, N., Barklem, P. S., Asplund, M., Murphy, Simon J., Beers, Timothy C., Ryan, S. G.
Published 2013

METAL-POOR STARS OBSERVED WITH THE MAGELLAN TELESCOPE. II. DISCOVERY OF FOUR STARS WITH [Fe/H] ≤ –3.5

by Placco, Vinicius M., Beers, Timothy C., Christlieb, N., Lee, Young Sun, Kennedy, Catherine R., Rossi, Silvia, Santucci, Rafael M., Frebel, Anna L.
Published 2014

CARBON-ENHANCED METAL-POOR STAR FREQUENCIES IN THE GALAXY: CORRECTIONS FOR THE EFFECT OF EVOLUTIONARY STATUS ON CARBON ABUNDANCES

by Placco, Vinicius M., Beers, Timothy C., Stancliffe, Richard J., Frebel, Anna L.
Published 2015

The R-process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510

by Placco, Vinicius M, Santucci, Rafael M., Yuan, Zhen, Mardini, Mohammad, Holmbeck, Erika M., Wang, Xilu, Surman, Rebecca, Hansen, Terese T., Roederer, Ian U., Beers, Timothy C., Choplin, Arthur, Ji, Alexander P., Ezzeddine, Rana, Frebel, Anna L., Sakari, Charli M., Whitten, Devin D., Zepeda, Joseph
Published 2022

Cosmological Insights into the Early Accretion of r -process-enhanced Stars. I. A Comprehensive Chemodynamical Analysis of LAMOST J1109+0754

by Mardini, Mohammad K, Placco, Vinicius M, Meiron, Yohai, Ishchenko, Marina, Avramov, Branislav, Mazzarini, Matteo, Berczik, Peter, Sedda, Manuel Arca, Beers, Timothy C, Frebel, Anna, Taani, Ali, Donnari, Martina, Al-Wardat, Mashhoor A, Zhao, Gang
Published 2022

Spectroscopic Validation of Low-metallicity Stars from RAVE

by 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, Matijevič, Gal, Frebel, Anna L., Hansen, Terese T., Holmbeck, Erika M., Rasmussen, Kaitlin C., Roederer, Ian U., Sakari, Charli M., Whitten, Devin D.
Published 2019

High-Resolution Spectroscopy of Extremely Metal-Poor Stars from SDSS/SEGUE: I. Atmospheric Parameters and Chemical Compositions

by Aoki, Wako, Beers, Timothy C., Lee, Young Sun, Honda, Satoshi, Ito, Hiroko, Takada-Hidai, Masahide, Frebel, Anna L., Suda, Takuma, Fujimoto, Masayuki Y., Carollo, Daniela, Sivarani, Thirupathi
Published 2013

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

by Cain, Madelyn, Frebel, Anna L., Ji, Alexander Pung, Placco, Vinicius M., Ezzeddine, Rana, Roederer, Ian U., Hattori, Kohei, Beers, Timothy C., Meléndez, Jorge, Hansen, Terese T., Sakari, Charli M.
Published 2022

New Hubble Space Telescope Observations of Heavy Elements in Four Metal-Poor Stars

by Roederer, Ian U., Lawler, James E., Sobeck, Jennifer S., Beers, Timothy C., Cowan, John J., Frebel, Anna L., Ivans, Inese I., Schatz, Hendrik, Sneden, Christopher, Thompson, Ian B.
Published 2013