Search Results - "Beers, Timothy C."

CARBON-ENHANCED METAL-POOR STAR FREQUENCIES IN THE GALAXY: CORRECTIONS FOR THE EFFECT OF EVOLUTIONARY STATUS ON CARBON ABUNDANCES by PLACCO, VINICIUS M, FREBEL, ANNA, Beers, Timothy C, Stancliffe, Richard J

“…We revisit the observed frequencies of carbon-enhanced metal-poor (CEMP) stars as a function of the metallicity in the Galaxy, using data from the literature…”
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THE STELLAR POPULATION STRUCTURE OF THE GALACTIC DISK by Bovy, Jo, Rix, Hans-Walter, Schlafly, Edward F., Nidever, David L., Holtzman, Jon A., Shetrone, Matthew, Beers, Timothy C.

“…ABSTRACT The spatial structure of stellar populations with different chemical abundances in the Milky Way (MW) contains a wealth of information on Galactic…”
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Erratum: “A Blueprint for the Milky Way’s Stellar Populations. V. 3D Local Dust Extinction” (2024, ApJS, 272, 20) by An, Deokkeun, Beers, Timothy C., Chiti, Anirudh

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Stellar haloes of simulated Milky-Way-like galaxies: chemical and kinematic properties by Tissera, Patricia B., Scannapieco, Cecilia, Beers, Timothy C., Carollo, Daniela

“…We investigate the chemical and kinematic properties of the diffuse stellar haloes of six simulated Milky-Way-like galaxies from the Aquarius Project. Binding…”
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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.

“…Abstract The recent detection of a binary neutron star merger and the clear evidence of the decay of radioactive material observed in this event have, after 60…”
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A Blueprint for the Milky Way’s Stellar Populations. V. 3D Local Dust Extinction by An, Deokkeun, Beers, Timothy C., Chiti, Anirudh

“…Abstract Using a grid of empirically calibrated synthetic spectra developed in our previous study, we construct an all-sky 3D extinction map from the large…”
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Dynamical Relics of the Ancient Galactic Halo by 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

“…We search for dynamical substructures in the LAMOST DR3 very metal-poor (VMP) star catalog. After cross-matching with Gaia DR2, there are ∼3300 VMP stars with…”
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The Discovery and Analysis of Very Metal-Poor Stars in the Galaxy by Beers, Timothy C, Christlieb, Norbert

“…▪ Abstract  We discuss the importance of very metal-poor stars to develop an understanding of the nature of the first stars that formed in the Universe and the…”
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The R-Process Alliance: First Magellan/MIKE Release from the Southern Search for R-process-enhanced Stars by 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

“…Abstract Extensive progress has recently been made in our understanding of heavy-element production via the r -process in the universe, specifically with the…”
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Galactic Stellar Populations in the Era of the Sloan Digital Sky Survey and Other Large Surveys by Ivezi, eljko, Beers, Timothy C, Juri, Mario

“…Studies of stellar populations, understood to mean collections of stars with common spatial, kinematic, chemical, and or age distributions, have been…”
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Actinide Production in the Neutron-rich Ejecta of a Neutron Star Merger by Holmbeck, Erika M., Sprouse, Trevor M., Mumpower, Matthew R., Vassh, Nicole, Surman, Rebecca, Beers, Timothy C., Kawano, Toshihiko

“…The rapid neutron-capture ("r-") process is responsible for synthesizing many of the heavy elements observed in both the solar system and Galactic metal-poor…”
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A Blueprint for the Milky Way’s Stellar Populations. IV. A String of Pearls—the Galactic Starburst Sequence by An, Deokkeun, Beers, Timothy C., Lee, Young Sun, Masseron, Thomas

“…Abstract We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia…”
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Evidence for the Third Stellar Population in the Milky Way's Disk by Carollo, Daniela, Chiba, Masashi, Ishigaki, Miho, Freeman, Ken, Beers, Timothy C., Lee, Young Sun, Tissera, Patricia, Battistini, Chiara, Primas, Francesca

“…The Milky Way is a unique laboratory in which stellar properties can be measured and analyzed in detail. In particular, stars in the older populations encode…”
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Stellar Loci. VI. An Updated Catalog of the Best and Brightest Metal-poor Stars by Xu, Shuai, Yuan, Haibo, Zhang, Ruoyi, Li, Haining, Beers, Timothy C., Huang, Yang

“…Abstract We employ Gaia, Two Micron All Sky Survey, and ALLWISE photometry, as well as astrometric data from Gaia, to search for relatively bright very…”
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Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View by Badenes, Carles, Mazzola, Christine, Thompson, Todd A., Covey, Kevin, Freeman, Peter E., Walker, Matthew G., Moe, Maxwell, Troup, Nicholas, Nidever, David, Prieto, Carlos Allende, Andrews, Brett, Barbá, Rodolfo H., Beers, Timothy C., Bovy, Jo, Carlberg, Joleen K., Lee, Nathan De, Johnson, Jennifer, Lewis, Hannah, Majewski, Steven R., Pinsonneault, Marc, Sobeck, Jennifer, Stassun, Keivan G., Stringfellow, Guy S., Zasowski, Gail

“…We use the multi-epoch radial velocities acquired by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey to perform a large-scale…”
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Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from Sloan Digital Sky Survey DR7 by Carollo, Daniela, Beers, Timothy C, Chiba, Masashi, Norris, John E, Freeman, Ken C, Lee, Young Sun, Ivezić, Željko, Rockosi, Constance M, Yanny, Brian

“…The structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and kinematic…”
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Chemodynamically Tagged Groups of CEMP Stars in the Halo of the Milky Way. I. Untangling the Origins of CEMP-s and CEMP-no Stars by Zepeda, Joseph, Beers, Timothy C., Placco, Vinicius M., Shank, Derek, Gudin, Dmitrii, Hirai, Yutaka, Mardini, Mohammad, Pifer, Colin, Catapano, Thomas, Calagna, Sean

“…Abstract We construct a sample of 644 carbon-enhanced metal-poor (CEMP) stars with abundance analyses based on moderate- to high-resolution spectroscopic…”
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Abundance Analysis of New r-process-enhanced Stars from the HESP-GOMPA Survey by Bandyopadhyay, Avrajit, Sivarani, Thirupathi, Beers, Timothy C.

“…We present a study on the detailed chemical abundances of five new relatively bright r-process-enhanced stars that were initially observed as part of the…”
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Dynamically Tagged Groups of Metal-poor Stars. II. The Radial Velocity Experiment Data Release 6 by Shank, Derek, Komater, Dante, Beers, Timothy C., Placco, Vinicius M., Huang, Yang

“…Abstract Orbital characteristics based on Gaia Early Data Release 3 astrometric parameters are analyzed for ∼8000 metal-poor stars ([Fe/H] ≤ −0.8) compiled…”
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Origin of highly r -process-enhanced stars in a cosmological zoom-in simulation of a Milky Way-like galaxy by Hirai, Yutaka, Beers, Timothy C, Chiba, Masashi, Aoki, Wako, Shank, Derek, Saitoh, Takayuki R, Okamoto, Takashi, Makino, Junichiro

“…ABSTRACT The r-process-enhanced (RPE) stars provide fossil records of the assembly history of the Milky Way (MW) and the nucleosynthesis of the heaviest…”
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