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Journal ArticleDOI

Stellar lifetimes and abundance ratios in chemical evolution.

Beatrice M. Tinsley
- 01 May 1979 - 
- Vol. 229, pp 1046-1056
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TLDR
In this paper, the authors used models for chemical evolution and stellar abundances to test assumptions about the nucleosynthesis of various elements, focusing on empirical evidence that carbon and iron, but not oxygen, are ejected in significant quantities by longer-lived stars than those proposed by Arnett.
Abstract
Models for chemical evolution and stellar abundances are used to test assumptions about the nucleosynthesis of various elements. For primary elements, the emphasis is on empirical evidence that carbon and iron, but not oxygen, are ejected in significant quantities by longer-lived stars than those proposed by Arnett for their entire nucleosynthesis, which all have lifetimes <2 x 10/sup 7/ years.

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The Apache Point Observatory Galactic Evolution Experiment (APOGEE)

Steven R. Majewski, +96 more
TL;DR: In this article, the Hungarian National Research, Development and Innovation Office (K-119517) and Hungarian National Science Foundation (KNFI) have proposed a method to detect the presence of asteroids in Earth's magnetic field.
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Elemental abundance survey of the Galactic thick disc

TL;DR: In this paper, an abundance analysis for F- and G- dwarfs of the Galactic thick-disc component was performed using accurate radial velocities combined with the Hipparcos astrometry, kinematics (U, V and W) and Galactic orbital parameters.
Journal ArticleDOI

Observational Clues to the Progenitors of Type Ia Supernovae

TL;DR: In this article, the authors review the significant recent observational progress in addressing the progenitor problem and consider clues that have emerged from the observed properties of the various proposed proggenitor populations, from studies of SN Ia sites.
Journal ArticleDOI

Stellar chemical signatures and hierarchical galaxy formation

TL;DR: In this paper, the authors compared the chemistries of stars in the Milky Way dwarf spheroidal (dSph) satellite galaxies with stars from the Galaxy, and found that the [α/Fe] ratios of most stars in dSph galaxies are generally lower than similar metallicity Galactic stars in this extended sample.
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