Results 1 to 10 of about 7,622,829 (352)
Modelling the chemical evolution [PDF]
Proceedings of the International Astronomical Union, 2010 Advanced observational facilities allow to trace back the chemical evolution of the Universe, on the one hand, from local objects of different ages and, secondly, by direct observations of redshifted objects.
Argast +40 more
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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 +8 more sources
Chemical Evolution in VeLLOs [PDF]
Journal of The Korean Astronomical Society, 2007 A new type of object called "Very Low Luminosity Objects (VeLLOs)" has been discovered by the Spitzer Space Telescope. VeLLOs might be substellar objects forming by accretion.
Lee, Jeong-Eun
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The Chemical Evolution of Phosphorus [PDF]
The Astrophysical Journal, 2014 Phosphorus is one of the few remaining light elements for which little is known about its nucleosynthetic origin and chemical evolution, given the lack of optical absorption lines in the spectra of long-lived FGK-type stars.
Cescutti, Gabriele +5 more
core +6 more sources
Cosmic Chemical Evolution [PDF]
The Astrophysical Journal, 1999 Numerical simulations of standard cosmological scenarios have now reached the degree of sophistication required to provide tentative answers to the fundamental question: Where and when were the heavy elements formed? Averaging globally, these simulations
Dave R. +4 more
core +5 more sources
Chemical Evolution of M31 [PDF]
, 2014 We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy. Then we present a recent chemical evolution model for M31 including radial gas flows and galactic fountains along the disk, as well ...
Matteucci, F., Spitoni, E.
core +3 more sources
Chemical evolution of star clusters [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2009 I discuss the chemical evolution of star clusters, with emphasis on old globular clusters, in relation to their formation histories. Globular clusters clearly formed in a complex fashion, under markedly different conditions from any younger clusters ...
Abia C. +6 more
core +5 more sources
Chemical evolution of the Galactic Center [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 In recent years, the Galactic Center (GC) region (200 pc in radius) has been studied in detail with spectroscopic stellar data as well as an estimate of the ongoing star formation rate. The aims of this paper are to study the chemical evolution of the GC
Grieco, V. +4 more
core +7 more sources
Chemical evolution of Seyfert galaxies [PDF]
Proceedings of the International Astronomical Union, 2007 We 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 ...
Ballero +5 more
core +5 more sources
Galactic Chemical Evolution [PDF]
Publications of the Astronomical Society of Australia, 2003 AbstractThe primary present-day observables upon which theories of galaxy evolution are based are a system’s morphology, dynamics, colour, and chemistry. Individually, each provides an important constraint to any given model; in concert, the four represent a fundamental (intractable) boundary condition for chemodynamical simulations.
Fenner, Yeshe +4 more
openaire +5 more sources