Results 41 to 50 of about 7,808,989 (241)
Constraining dark energy using real and mock galaxy surveys [PDF]
, 2009 In this thesis, we study how dark energy may be constrained by measurements of large-scale clustering in future galaxy surveys, and through the imprint of a time-varying large-scale potential on the CMB (the integrated Sachs-Wolfe effect).
CAI, YANCHUAN
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Modeling the Ages and Chemical Abundances of Elliptical Galaxies
The Astrophysical JournalSpectroscopic studies of elliptical galaxies show that their stellar population ages, mean metallicity, and α enhancement traced by [Mg/Fe] all increase with galaxy stellar mass or velocity dispersion.
Nicole Marcelina Gountanis +5 more
doaj +1 more source
INHOMOGENEITIES OF CHEMICAL COMPOSITION AND COSMOCHRONOLOGY PROBLEMS
Odessa Astronomical Publications, 2017 The problems of determination of chemical composition of stars and connection with theory of chemical evolution of Galaxy are discussed.
V. G. Klochkova, V. E. Panchuk
doaj +1 more source
Animal Research and One Health, EarlyView.Supplementation with mannan oligosaccharides (MOS) enhances growth, disease resistance, antioxidant capacity, and gut microbiota diversity while suppressing inflammation, apoptosis, and strengthening intestinal barrier integrity in zebrafish challenged with LPS or DSS.
Zhiyuan Lu +4 more
wiley +1 more source
The Disrupted Chemical Enrichment History of the Milky Way Driven by Gas Accretion
The Astrophysical Journal LettersAs the only galaxy enabling temporally resolved observations from an internal vantage point, the Milky Way as a galaxy offers unique insights into galactic chemical enrichment history, establishment of fundamental scaling relations, and the underlying ...
Jianhui Lian +6 more
doaj +1 more source
The Astrophysical Journal, 2023 Growing evidence in support of a connection between active galactic nuclei (AGN) activity and the ram pressure stripping (RPS) phenomenon has been found both observationally and theoretically in the past decades.
Giorgia Peluso +7 more
doaj +1 more source
Biotechnology and Applied Biochemistry, EarlyView.ABSTRACT Effective vaccines against Trypanosoma cruzi, the causative agent of Chagas disease, are urgently needed. Here, we report the design and in silico validation of a novel multiepitope vaccine construct targeting the key surface proteins ASP‐2 and gp82. Using a comprehensive immunoinformatics pipeline, we identified and selected 38 potent T‐cell (
Maria Karolaynne da Silva +8 more
wiley +1 more source
Stellar Populations with MaNGA: Iron Kink and Nitrogen Fuzz
The Astrophysical JournalRecent analysis of 2968 MaNGA early-type galaxies has yielded two notable trends with velocity dispersion ( σ ) not previously discussed in the literature. First, Fe abundance rises with σ but only until σ ≈ 100 km s ^−1 , after which it falls.
Guy Worthey, Tathagata Pal
doaj +1 more source
Search for Extremely Metal-poor Stars with Gemini-N/Graces. I. Chemical-abundance Analysis
The Astrophysical Journal, 2023 We present stellar parameters and abundances of 13 elements for 18 very metal-poor (VMP; [Fe/H] < –2.0) stars, selected as extremely metal-poor (EMP; [Fe/H] < –3.0) candidates from the Sloan Digital Sky Survey and Large sky Area Multi-Object Fiber ...
Miji Jeong +7 more
doaj +1 more source
Evolution of galactic disks and spheroids [PDF]
, 2004 In this Thesis the structural properties of galaxies using quantitative 2-dimensional bulge to disk decompositions are analysed across a range of environments and red- shifts.
Dzanovic, Dajana
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