Results 101 to 110 of about 5,644 (256)
A model for a two component galaxy
, 1978 A simple galactic-structure model is developed in which the galaxy is considered as a two-component-halo-disk structure. The model treats a galaxy as composed of two different axially deformed polytropic structures, homocentrical and coaxial, with ...
DALLAPORTA, NICOLO' +2 more
core
The Astrophysical JournalWe present an [O/Fe] ratio of a luminous galaxy GN-z11 at z = 10.60 derived with the deep public JWST/NIRSpec data. We fit the medium-resolution grating (G140M, G235M, and G395M) data with the model spectra consisting of BPASS-stellar and Cloudy -nebular
Minami Nakane +14 more
doaj +1 more source
Supramolecular Aggregates of Amino Acid‐Functionalized 1,8‐Naphthalimides for Chiral Recognition
Chemistry–Methods, Volume 6, Issue 7, July 2026.We synthesized three self‐assembling, amino acid‐functionalized 1,8‐naphthalimides. We studied their aggregation in solution and demonstrated their chiral recognition ability by fluorescence and resonance light scattering measurements. Notably, these fluorescent probes maintain their chiral recognition ability when incorporated in solid supports like ...
Salvatore Marullo, Francesca D’Anna
wiley +1 more source
Chemical Evolution of Galaxies
, 2001 Chemical abundances provide important clues to the evolution of galaxies. Ionized nebulae are one of the main sources of chemical abundance measurements, especially in external galaxies. Studies of H II regions have shown that the overall metallicity of galaxies increases with galactic luminosity, and that spiral galaxies characteristically have radial
openaire +2 more sources
Chemical evolution and abundance gradients in spiral galaxies
, 2013 Chemical evo-\ud lution models of spiral galaxies require observational constraints in order to make accurate predictions\ud concerning interstellar abundances, star formation history, age-metallicity relations, etc.
Maciel, Walter Junqueira
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Fe Abundances of Early Galaxies at z = 9–12 Derived with Deep JWST Spectra
The Astrophysical JournalWe derive Fe abundance ratios of seven galaxies at z = 9–12 with −22 < M _UV
Minami Nakane +14 more
doaj +1 more source
A Dialogue on Revolutions and Revolutionaries in Science: A Perspective From Quantum Mechanics
Natural Sciences, Volume 6, Issue 3, July 2026.ABSTRACT We discuss the notions of scientific revolutions and revolutionaries in the context of the Relativity Revolution and of the First, Second, and Third Quantum Revolutions. We conclude that at the core of the question of what qualifies as a revolution and revolutionary is an assessment of the gradients of knowledge accumulation over time, both at
Ron Folman, Bretislav Friedrich
wiley +1 more source
Chemical Evolution of the Galaxy
, 1994 ten pages in CUPstyle LaTex: extract at the end the corresponding confguid ...
openaire +2 more sources
Gravitational waves throughout galaxy evolution: stellar BH mergers and heavy SMBH seeds. [PDF]
, 2021 The main goal of my thesis is to carefully characterize different astrophysical processes leading to gravitational wave (GW) emission, strongly relying on theoretical and observational astrophysical basis.
BOCO, LUMEN
core
pop-cosmos: A Comprehensive Picture of the Galaxy Population from COSMOS Data
The Astrophysical Journal Supplement SeriesWe present pop-cosmos : a comprehensive model characterizing the galaxy population, calibrated to 140,938 ( r < 25 selected) galaxies from the Cosmic Evolution Survey (COSMOS) with photometry in 26 bands from the ultraviolet to the infrared. We construct
Justin Alsing +6 more
doaj +1 more source