Results 201 to 210 of about 59,850 (232)

Chemical Abundances and Galaxy Evolution

1984
The chemical abundance characteristics of two comparatively structurally simple classes of galaxies, the ellipticals and irregulars, are briefly reviewed. Neither of these types of galaxies have properties which are fully consistent with the quantitative predictions of basic chemical evolution models. Possible sources for discrepancies are discussed in
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Chemical and photometric evolution of elliptical galaxies

Space Science Reviews, 1994
In this paper we present the new chemical-spectro-photometric models of population synthesis by Bressan, Chiosi & Fagotto (1993). The models are specifically designed for elliptical galaxies. They include the presence of dark matter and galactic winds triggered by the energy depositfrom supernovae and winds of massive stars.
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Chemical evolution of two-component galaxies

Astrophysics and Space Science, 1978
Results provided by analytical models for the chemical evolution of two-component (spheroidal and disk) galaxies based on the instantaneous recycling approximation are compared with numerical results obtained by discarding the cited approximation. The assumptions and general equations used in the calculations are discussed, and the method adopted for ...
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Chemical Evolution of Irregular Galaxies

2011
In this chapter, we describe the properties of irregular galaxies and the proposed chemical evolution models. Irregular galaxies are generally small and rather simple objects with low metallicity and large gas content, suggesting that they are either young objects or have undergone discontinuous star formation activity (bursts) or a continuous but not ...
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Cosmic chemical evolution and the evolution of galaxies

AIP Conference Proceedings, 2000
The evolutionary history of star and element formation rates with cosmic epoch is reviewed. The problem of taking proper account of the effects of dust obscuration in optical and ultraviolet observations is emphasised. Recent submillimetre surveys have been used to derive the star formation rate as a function of cosmic epoch independent of dust ...
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Phosphorus-bearing molecules PO and PN at the edge of the Galaxy

Nature, 2023
Lilia Koelemay, Katherine Gold, Lucy M Ziurys   +2 more
exaly  

Chemical Evolution of Galaxies

1980
Jean Audouze, Sylvie Vauclair
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Exploring the Sun’s birth radius and the distribution of planet building blocks in the Milky Way galaxy: A multi-zone Galactic chemical evolution approach

Monthly Notices of the Royal Astronomical Society, 2023
Takuji Tsujimoto
exaly  

The Evolution of Galaxy Structure Over Cosmic Time

Annual Review of Astronomy and Astrophysics, 2014
Christopher J Conselice
exaly  

De re metallica: the cosmic chemical evolution of galaxies

Astronomy and Astrophysics Review, 2019
Roberto Maiolino, Filippo Mannucci
exaly