Results 81 to 90 of about 426,951 (145)

Binarity among CEMP-no stars: an indication of multiple formation pathways?

, 2019
Carbon-enhanced metal-poor (CEMP) stars comprise a high percentage of stars at the lowest metallicities. The stars in the CEMP-no subcategory do not show any s-process enhancement and therefore cannot easily be explained by transfer of carbon and s ...
K. A. Venn, É. Depagne, A. Arentsen, E. Starkenburg, A. W. McConnachie, M. D. Shetrone   +5 more
core   +1 more source

The Eu Isotopic Ratios in CEMP Stars

Bulletin de la Société Royale des Sciences de Liège
Understanding the chemical evolution of galaxies requires accurate abundances of chemical elements in various stellar populations, which are then compared with theoretical predictions to probe their nucleosynthetic origin. However, most of the elements have several stable isotopes which are produced by different nucleosynthetic reactions, thus making ...
Abdulgaffur Farha, Aliparambil, Karinkuzhi, Drisya, Van Eck, Sophie   +2 more
openaire   +2 more sources

Near-IR Spectroscopy of CEMP Stars with SOAR/OSIRIS [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe report on medium-resolution near-IR spectroscopy of a sample of over 60 Carbon-Enhanced Metal-Poor (CEMP) stars observed with SOAR/OSIRIS, selected from the HK survey of Beers and colleagues and the Hamburg/ESO Survey of Christlieb and colleagues.
Catherine R. Kennedy, Thirupathi Sivarani, Timothy C. Beers, Silvia Rossi, Vinicius M. Placco, J. Johnson, T. Masseron   +6 more
openaire   +1 more source

Abundances of carbon-enhanced metal-poor stars as constraints on their formation [PDF]

, 2016
Context. An increasing fraction of carbon-enhanced metal-poor (CEMP) stars is found as their iron abundance, [Fe/H], decreases below [Fe/H] =−2.0.
Hansen, T.T., B. Nordström, Kennedy, Ryan C, G. Cescutti, Placco, V.M., V. M. Placco, Hansen, T. T., Nordström, Birgitta, Hansen, C.J., Andersen, Johannes, T. C. Beers, Kennedy, C.R., Cescutti, Gabriele, Beers, T. C., Cescutti, G., Beers, T.C., Hansen, C. J., C. J. Hansen, Placco, V. M., C. R. Kennedy, C. Chiappini, J. Andersen, Chiappini, C., T. T. Hansen, Andersen, J., Chiappini, Cristina, Nordström, B., Kennedy C. R., Placco V. M., Hansen C. J., Cescutti G, Beers T. C., Nordström B., Hansen T. T., Chiappini C., Andersen J.   +35 more
core   +2 more sources

Observational signatures and constraints on the intermediate neutron-capture process

Astronomy & Astrophysics
Context. Observational abundances of carbon enhanced metal-Poor (CEMP) stars with patterns in between those produced by the rapid (r) and slow (s) nucleosynthesis processes (CEMP-rs stars) are currently invoked as evidence of synthesis via the ...
Giribaldi R. E., Vescovi D., Magrini L., Cristallo S., D’Orazi V., Piersanti L., Cornejo Espinoza D., Randich S., Baratella M.   +8 more
doaj   +1 more source

The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE – The CEMP star connection

EPJ Web of Conferences, 2012
In recent years, massive new spectroscopic data sets, such as the over half million stellar spectra obtained during the course of SDSS (in particular its sub-survey SEGUE), have provided the quantitative detail required to formulate a coherent story of ...
Carollo D., Beers T.C.
doaj   +1 more source

Reduced content of gamma‐aminobutyric acid enhances resistance to bacterial wilt disease in tomato

Plant Biotechnology Journal, Volume 23, Issue 3, Page 792-806, March 2025.
Summary Bacteria within the Ralstonia solanacearum species complex cause devastating diseases in numerous crops, causing important losses in food production and industrial supply. Despite extensive efforts to enhance plant tolerance to disease caused by Ralstonia, efficient and sustainable approaches are still missing.
Achen Zhao, Qiuyi Li, Pengfei Meng, Ping Liu, Siqun Wu, Zhaobo Lang, Yi Song, Alberto P. Macho   +7 more
wiley   +1 more source

CEMP stars: possible hosts to carbon planets in the early Universe

, 2017
We explore the possibility of planet formation in the carbon-rich protoplanetary disks of carbon-enhanced metal-poor (CEMP) stars, possible relics of the early Universe.
Mashian, Natalie, Loeb, Abraham
core   +1 more source

Cementum attachment protein‐derived peptide induces cementum formation

FASEB BioAdvances, Volume 7, Issue 2, February 2025.
Cementum attachment protein‐derived pentapeptide (CAP‐p5) promotes the differentiation of human periodontal ligament cells toward a cementoblastic phenotype, Induces the deposition of a mineral layer on demineralized dentin slices. This mineralized‐like tissue represents a layer of hydroxyapatite. In vivo CAP‐p5. In vivo, CAP‐p5 promotes the deposition
Lía Hoz Rodríguez, Maricela Santana Vázquez, Luis Fernando Ramírez González, Gonzalo Montoya Ayala, Sonia López Letayf, A. Sampath Narayanan, Higinio Arzate   +6 more
wiley   +1 more source

Abundances of Rarely Detected s-process Elements Derived from the Ultraviolet Spectrum of the s-process-enhanced Metal-poor Star HD 196944

The Astrophysical Journal
We present an analysis of the heavy-element abundances of HD 196944, a carbon-enhanced metal-poor (CEMP) star enriched with elements produced by the slow neutron-capture process ( s -process).
Ian U. Roederer, Vinicius M. Placco, Amanda I. Karakas, Elizabeth A. Den Hartog, Timothy C. Beers   +4 more
doaj   +1 more source