Results 101 to 110 of about 7,914 (245)
, 2015 The open cluster NGC 6791 is among the oldest, most massive open clusters in the Galaxy. High-resolution H-band spectra from the SDSS III / Apache Point Observatory Galactic Evolution Experiment (APOGEE) of 11 red giants in NGC 6791 are analyzed for ...
K. Cunha, V.V. Smith
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Analysis of the Internal Radial Gradient of Chemical Abundances in Spiral Galaxies from CALIFA
The Astrophysical JournalThe study of chemical evolution is of paramount importance for understanding the evolution of galaxies. Models and observations propose an inside-out mechanism in the formation of spiral galaxy disks, implying a negative radial gradient of elemental ...
A. F. S. Cardoso +3 more
doaj +1 more source
Ecology and Evolution, Volume 16, Issue 6, June 2026.Pleistocene glaciations have shaped freshwater fish evolution and distribution patterns across North America. This study investigated the phylogeographical history of the Western Blacknose Dace (Rhinichthys obtusus) using mitochondrial genomic data, revealing three major clades that diverged 2–1.5 million years ago during Pleistocene glaciations when ...
Adelina Rodriguez +7 more
wiley +1 more source
, 2022 We present the results of the high-resolution (R$\sim$60,000) spectroscopic analysis of the star LAMOSTJ045019.27+394758.7 (hereafter J045) from the list of carbon stars of LAMOST DR2.
Purandardas, Meenakshi +7 more
core +1 more source
Abundances and gradients in nearby galaxies [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractThe study of chemical abundance gradients can provide essential information on the evolution of disk galaxies. Here I briefly review our current observational knowledge concerning the abundances of the ionized gas (H ii regions and planetary nebulae) in nearby galaxies, and how they inform us about the time evolution of metallicity gradients.
openaire +1 more source
iMetaOmics, Volume 3, Issue 2, June 2026.Paradigm shift: PCR‐free methods reveal 6–15‐fold higher arbuscular mycorrhizal (AM) fungal abundance than metabarcoding, exposing systematic underestimation across decades of research. Predictive power: AM fungal abundance serves as a community‐level trait that predicts crop yield under drought conditions.
Peilin Chen, John W. Taylor, Cheng Gao
wiley +1 more source
Evidence of Gaia Enceladus Experiencing at Least Two Passages around the Milky Way
The Astrophysical Journal LettersOne of the major recent breakthroughs has been the discovery of the last major merger to happen in the history of the Milky Way. Around 10 Gyr ago, the galaxy Gaia Enceladus with an estimated ∼10% of the Milky Way mass, fell into the potential of our ...
Ása Skúladóttir +6 more
doaj +1 more source
iMetaOmics, Volume 3, Issue 2, June 2026.Prebiotic Ginseng polysaccharides (GP) alleviate mastitis through selective enrichment of gut L. murinus, which elevates its anti‐inflammatory metabolite deoxycholic acid (DCA). Circulating DCA engages mammary epithelial TGR5 receptors, triggering the cAMP–PKA pathway to suppress NF‐κB/NLRP3‐mediated inflammation.
Zhijie Zheng +15 more
wiley +1 more source
Progress of metabolomics‐centric multi‐omics research in medicine
iMetaOmics, Volume 3, Issue 2, June 2026.The graphical abstract illustrates a holistic roadmap for metabolomics‐centric multi‐omics integration in medical research. The upper panel depicts the technological transition from traditional bulk analysis to high‐resolution single‐cell and spatial methodologies, specifically addressing inherent challenges such as molecular complexity and dynamic ...
Ziyi Wang +6 more
wiley +1 more source
, 2003 Hydrodynamical SPH simulations of galaxy clusters are used to investigate the metal enrichment of the intracluster medium. The final metallicity abundances of the simulated clusters are determined according to the numerical resolution and a number of ...
Valdarnini, Riccardo
core +1 more source