Results 1 to 10 of about 203,820 (319)
CHEMICAL EVOLUTION LIBRARY FOR GALAXY FORMATION SIMULATION [PDF]
The Astronomical Journal, 2017 Abstract We have developed a software library for chemical evolution simulations of galaxy formation under the simple stellar population (SSP) approximation. In this library, all of the necessary components concerning chemical evolution, such as initial mass functions, stellar lifetimes, yields from Type II and Type Ia supernovae ...
T. Saitoh
semanticscholar +5 more sources
Galaxy Formation and Chemical Evolution [PDF]
International Journal of Astronomy and Astrophysics, 2014 14 pages, 5 ...
S. Sahijpal
+6 more sources
Chemical evolution of Seyfert galaxies [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractWe computed the chemical evolution of Seyfert galaxies, residing in spiral bulges, based on an updated model for the Milky Way bulge with updated calculations of the Galactic potential and of the feedback from the central supermassive black hole (BH) in a spherical approximation. We followed the evolution of bulges of masses 2 × 109 − 1011M⊙ by
S. K. Ballero +2 more
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PÉGASE.3: A code for modeling the UV-to-IR/submm spectral and chemical evolution of galaxies with dust [PDF]
Astronomy & Astrophysics, 2019 A code computing consistently the evolution of stars, gas and dust, as well as the energy they radiate, is required to derive reliably the history of galaxies by fitting synthetic spectral energy distributions (SEDs) to multiwavelength observations.
M. Fioc +3 more
semanticscholar +3 more sources
A SPECTROSCOPIC STUDY OF BLUE SUPERGIANT STARS IN THE SCULPTOR GALAXY NGC 55: CHEMICAL EVOLUTION AND DISTANCE [PDF]
, 2016 Low-resolution (4.5–5 Å) spectra of 58 blue supergiant stars distributed over the disk of the Magellanic spiral galaxy NGC 55 in the Sculptor group are analyzed by means of non-LTE techniques to determine stellar temperatures, gravities, and ...
R. Kudritzki +7 more
semanticscholar +3 more sources
Early Chemical Evolution of Galaxies [PDF]
, 1999 Initial conditions are set by Big bang nucleosynthesis from which we know that 90 per cent of baryons are dark and have essentially unknown chemical composition. In our own Galaxy, there are many clues from individual stars in different populations whereas in elliptical galaxies the data largely come from integrated spectra, but these raise problems ...
B. E. J. Pagel
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THE COMPARATIVE CHEMICAL EVOLUTION OF AN ISOLATED DWARF GALAXY: A VLT AND KECK SPECTROSCOPIC SURVEY OF WLM [PDF]
, 2013 Building on our previous spectroscopic and photometric analysis of the isolated Local Group dwarf irregular (dIrr) galaxy WLM, we present a comparison of the metallicities of its red giant branch stars with respect to the well-studied Local Group dwarf ...
R. Leaman +10 more
semanticscholar +3 more sources
Chemical Evolution of Zinc in the Galaxy [PDF]
, 2009 The local thermodynamic equilibrium (LTE) abundances of zinc (Zn) of our sample of 35 metal-poor stars were explored in the range of 3.0 0.5. This trend is better explained by a chemical evolution model constructed with models of normal SNe II, HNe ...
Y. Saito +3 more
semanticscholar +2 more sources
Chemical Evolution of Low Mass Disc Galaxies [PDF]
, 1999 We show that the multiphase chemical evolution model reproduces the correlations obtained along the spiral sequence, dwarf galaxies included. However the apparent spatial chemical uniformity observed in some irregular galaxies cannot be reproduced with it. An evolutionary model has been developed and tested to explain flat gradients.
Molla, Mercedes, Roy, Jean-Rene
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Assessing stellar yields in Galaxy chemical evolution: Observational stellar abundance patterns [PDF]
Monthly notices of the Royal Astronomical Society, 2023 One-zone Galactic Chemical Evolution (GCE) models have provided useful insights on a great wealth of average abundance patterns in many environments, especially for the Milky Way and its satellites.
Jinning Liang, E. Gjergo, Xilong Fan
semanticscholar +1 more source