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Chemical Abundances in Meteorites
1988Some 4.6 billion years ago contraction and subsequent collapse of an interstellar cloud led to the formation of the solar system. The ratio of heavy elements to hydrogen, increasing continuously in interstellar material, due to the addition of freshly synthesized material from stars, was frozen in for the solar system at this point of time.
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Stellar chemical abundances with the GHRS
Physica Scripta, 1996The accurate quantitative analysis of high resolution ultraviolet spectra of ultra-sharp-lined early-type, chemically peculiar stars, obtained with the Goddard High Resolution spectrograph on the Hubble Space Telescope, has been made possible by the synergism between state-of-the-art astro-physics and state-of-the-art atomic spectroscopy. We illustrate
David S Leckrone +4 more
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Chemical Abundances in Old Populations
1992Preliminary single-burst population synthesis models are presented for weak and strong spectral features as a function of metallicity for old populations. Models agree with published globular cluster observations as well as theoretical calibrations. For small ellipticals, the galaxies and model predictions agree well in all indices.
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Chemical Abundances and Galaxy Evolution
1984The 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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Unveiling the time evolution of chemical abundances across the Milky Way disc with APOGEE
Monthly Notices of the Royal Astronomical Society, 2023Ivan Minchev +2 more
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A catalogue of planetary nebulae chemical abundances in the Galactic bulge
Monthly Notices of the Royal Astronomical Society, 2023Quentin Parker, Albert Zijlstra
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Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey
Monthly Notices of the Royal Astronomical Society, 2021J Masegosa +2 more
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