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: a comprehensive abundance analysis of HD 222925, a metal-poor star with an extreme R-process enhancement of [Eu/H] = −0.14*

by Roederer, Ian U., Sakari, Charli M., Placco, Vinicius M., Beers, Timothy C., Ezzeddine, Rana, Frebel, Anna, Hansen, Terese T.
Published 2020

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 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

METAL-POOR STARS OBSERVED WITH THE MAGELLAN TELESCOPE. III. NEW EXTREMELY AND ULTRA METAL-POOR STARS FROM SDSS/SEGUE AND INSIGHTS ON THE FORMATION OF ULTRA METAL-POOR STARS

by Placco, Vinicius M., Lee, Young Sun, Beers, Timothy C., Pena, Jose M., Chan, Conrad, Heger, Alexander, Frebel, Anna L., Jacobson, Heather
Published 2015

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

OBSERVATIONAL CONSTRAINTS ON FIRST-STAR NUCLEOSYNTHESIS. II. SPECTROSCOPY OF AN ULTRA METAL-POOR CEMP-no STAR

by Placco, Vinicius M., Beers, Timothy C., Yoon, Jinmi, Heger, Alexander, Chan, Conrad, Casey, Andrew R., Christlieb, Norbert, Frebel, Anna L., Chiti, Anirudh
Published 2017

METAL-POOR STARS OBSERVED WITH THE MAGELLAN TELESCOPE. I. CONSTRAINTS ON PROGENITOR MASS AND METALLICITY OF AGB STARS UNDERGOING s-PROCESS NUCLEOSYNTHESIS

by Placco, Vinicius M., Beers, Timothy C., Karakas, Amanda I., Kennedy, Catherine R., Rossi, Silvia, Christlieb, N., Stancliffe, Richard J., Frebel, Anna L.
Published 2014

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

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

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

NEW DETECTIONS OF ARSENIC, SELENIUM, AND OTHER HEAVY ELEMENTS IN TWO METAL-POOR STARS

by Roederer, Ian U., Schatz, Hendrik, Lawler, James E., Beers, Timothy C., Cowan, John J., Frebel, Anna L., Ivans, Inese I., Sneden, Christopher, Sobeck, Jennifer S.
Published 2015

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

The R-process Alliance: first release from the southern search for R-process-enhanced stars in the galactic halo

by 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 2020

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 Most Metal-Poor Stars. IV. The Two Populations With [Fe/H] [< over ~] -3.0

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