Results 61 to 70 of about 407,067 (139)

High-Resolution Spectroscopy of Cool Carbon-Rich and Metal-Poor Star HD 209621

Open Astronomy, 2012
Element abundances for HD 209621 obtained earlier display significant discrepancies, especially in the case of CNO and neutron-capture elements. Therefore we performed a detailed analysis of chemical composition of this star using a new high-resolution ...
Matrozis E., Začs L., Barzdis A.
doaj   +1 more source

Developing a Southern Ocean Marine Ecosystem Model Ensemble to Assess Climate Risks and Uncertainties

Earth's Future, Volume 13, Issue 3, March 2025.
Abstract Climate change could irreversibly modify Southern Ocean ecosystems. Marine ecosystem model (MEM) ensembles can assist policy making by projecting future changes and allowing the evaluation and assessment of alternative management approaches.
Kieran Murphy, Denisse Fierro‐Arcos, Tyler Rohr, David Green, Camilla Novaglio, Katherine Baker, Kelly Ortega‐Cisneros, Tyler D. Eddy, Cheryl S. Harrison, Simeon L. Hill, Patrick Eskuche‐Keith, Camila Cataldo‐Mendez, Colleen M. Petrik, Matthew Pinkerton, Paul Spence, Ilaria Stollberg, Roshni C. Subramaniam, Rowan Trebilco, Vivitskaia Tulloch, Juliano Palacios‐Abrantes, Sophie Bestley, Daniele Bianchi, Philip Boyd, Pearse J. Buchanan, Andrea Bryndum‐Buchholz, Marta Coll, Stuart Corney, Samik Datta, Jason D. Everett, Romain Forestier, Elizabeth A. Fulton, Vianney Guibourd de Luzinais, Ryan Heneghan, Julia G. Mason, Olivier Maury, Clive R. McMahon, Eugene Murphy, Anthony J. Richardson, Derek P. Tittensor, Scott Spillias, Jeroen Steenbeek, Devi Veytia, Julia Blanchard   +42 more
wiley   +1 more source

The role of binaries in the enrichment of the early Galactic halo:II. Carbon-enhanced metal-poor stars: CEMP-no stars

, 2016
Context. The detailed composition of most metal-poor halo stars has been found to be very uniform. However, a fraction of 20−70% (increasing with decreasing metallicity) exhibit dramatic enhancements in their abundances of carbon; these are the so-called
Placco, V. M., B. Nordström, Yoon, J., V. M. Placco, J. Yoon, Hansen, T. T., Nordström, Birgitta, J. Andersen, T. T. Hansen, Andersen, Johannes, T. C. Beers, Buchhave, Lars A., Beers, T. C., L. A. Buchhave   +13 more
core   +1 more source

Four-hundred Very Metal-poor Stars Studied with LAMOST and Subaru. IV. Heavy Element Enhanced Stars

The Astrophysical Journal
We perform a homogeneous analysis of 82 heavy-element-enhanced metal-poor stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) /Subaru sample, including 64 r -process-enhanced stars, two limited- r stars, and 16 stars ...
Yangming Lin, Haining Li, Wako Aoki, Ruizheng Jiang, Tadafumi Matsuno, Zhenyu He, Ruizhi Zhang, Zhuohan Li, Satoshi Honda, Gang Zhao   +9 more
doaj   +1 more source

Constraining Neutron-Capture Nucleosynthesis from Surface Chemical Composition of Chemically Peculiar Stars: The Puzzling Case of HE 1005-1439

Galaxies
The chemical composition of stellar atmospheres provides a valuable window into the complex processes of stellar nucleosynthesis. Among chemically peculiar cool stars, many objects are the products of mass transfer in binary systems, including most ...
Aruna Goswami, Arthur Choplin, Partha Pratim Goswami, Lionel Siess, Stephane Goriely   +4 more
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 [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
11 pages, 5 figures; accepted to ...
Mashian, Natalie, Loeb, Abraham
openaire   +4 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

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

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