Results 1 to 10 of about 60,296 (295)
Galaxy Formation and Chemical Evolution [PDF]
International Journal of Astronomy and Astrophysics, 2014 14 pages, 5 ...
S. Sahijpal
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Chemical Evolution of Galaxies [PDF]
Publications of the Astronomical Society of the Pacific, 2000 Chemical evolution of galaxies brings together ideas on stellar evolution and nucleosynthesis with theories of galaxy formation, star formation and galaxy evolution, with all their associated uncertainties.
Arimoto N. +21 more
core +7 more sources
Disk Galaxy Models Driven by Stochastic Self-Propagating Star Formation
Open Astronomy, 2010 We present a model of chemical and spectrophotometric evolution of disk galaxies based on a stochastic self-propagating star formation scenario. The model incorporates galaxy formation through the process of accretion, chemical and photometric evolution ...
Mineikis T., Vansevičius V.
doaj +3 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
openalex +5 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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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 ...
Takayuki R. Saitoh
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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.
M. Mollá, Jean-René Roy
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The Astrophysical Journal, 2023 We search for local extremely metal-poor galaxies (EMPGs), selecting photometric candidates by broadband color excess and machine-learning techniques with the SDSS photometric data.
Moka Nishigaki +18 more
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Chemical Evolution History of MaNGA Galaxies
The Astrophysical Journal, 2022 Abstract We show the results of a study using the spectral synthesis technique study for the full MaNGA sample showing their chemical enrichment history (ChEH) as well as the evolution of the stellar mass–metallicity relation (MZR) over cosmic time.
Artemi Camps-Fariña +10 more
openaire +4 more sources
Nitrogen isotopes in the interstellar medium: A chemical journey across the Galaxy [PDF]
EPJ Web of Conferences, 2022 One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. This is the process that distributes the less abundant stable isotopes of an element
Colzi Laura +3 more
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