Open AccessJournal Article
A New Picture for the Chemical Evolution of the Galaxy: the Two Infall Model
TLDR
In this paper, a chemical evolution model for the Galaxy is presented, which assumes that the evolution of the halo and thick disk is completely disentangled from the thin disk.Abstract:
Resumen en: We present a chemical evolution model for the Galaxy which assumes that the evolution of the halo and thick disk is completely disentangled from the thin...read more
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Nucleosynthesis in Stars and the Chemical Enrichment of Galaxies
TL;DR: In this article, the authors review the recent results of the nucleosynthesis yields of mainly massive stars for a wide range of stellar masses, metallicities, and explosion energies, and provide yields tables and examine how those yields are affected by some hydrodynamical effe...
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New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
Luca Casagrande,Ralph Schoenrich,Martin Asplund,Santi Cassisi,Ivan Ramirez,Jorge Melendez,Thomas Bensby,Sofia Feltzing +7 more
TL;DR: In this paper, the Geneva-Copenhagen survey was used to estimate stellar effective temperatures and metallicity scales for a Bayesian analysis of stellar ages, which is used for a better match to theoretical isochrones, which can provide better constraints on the physical processes relevant in the build-up of the Milky Way disc.
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The chemical compositions of Galactic disc F and G dwarfs
TL;DR: In this article, photospheric abundances for 27 elements from carbon to europium in 181 F and G dwarfs from a differential local thermodynamic equilibrium (LTE) analysis of high-resolution and high signal-to-noise ratio spectra were presented.
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Abundance Gradients and the Formation of the Milky Way
TL;DR: In this article, the authors adopt a chemical evolution model, which is an improved version of the Chiappini, Matteucci, & Gratton model, assuming two main accretion episodes for the formation of the Galaxy, the first forming the halo and bulge in a short timescale and the second one forming the thin disk, with a timescale that is an increasing function of the Galactocentric distance (being of the order of 7 Gyrs at the solar neighborhood).
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Chemical evolution with radial mixing
Ralph Schönrich,James Binney +1 more
TL;DR: In this article, a model of the chemical evolution of our Galaxy is extended to include radial migration of stars and flow of gas through the disc, and the model provides a good fit to the distribution of GCS stars in the age-metallicity plane, although this plane was not used in the fitting process.
References
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Journal ArticleDOI
Abundances of the elements: Meteoritic and solar
Edward Anders,Nicolas Grevesse +1 more
TL;DR: In this article, new abundance tables have been compiled for C1 chondrites and the solar photosphere and corona, based on a critical review of the literature to mid-1988.
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The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis
S. E. Woosley,Thomas A. Weaver +1 more
TL;DR: In this paper, the nucleosynthetic yield of isotopes lighter than A = 66 (zinc) is determined for a grid of stellar masses and metallicities including stars of 11, 12, 13, 15, 18, 19, 20, 22, 25, 30, 35, and 40 M{sub {circle_dot}} and metals Z = 0, 10{sup {minus}4}, 0.01, 0.1, and 1 times solar (a slightly reduced mass grid is employed for non-solar metallicities).
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Evidence from the motions of old stars that the Galaxy collapsed.
Journal ArticleDOI
The Star Formation Law in Galactic Disks
TL;DR: In this article, the dependence of the massive star formation rate (SFR) on the density and dynamics of the interstellar gas was investigated in 15 galaxies and the relationship between the SFR and gas surface density was defined.
Book
Origin and evolution of the elements
TL;DR: In this paper, the origin and evolution of cosmic elements are discussed. But their focus is on stellar and primordial nuceosynthesis, cosmic ray spallation, and other processes leading to the formation of the cosmic elements.