Chemical Abundance Inhomogeneities in Globular Cluster Stars
It is now clear that abundance variations from star-to-star among the light elements, particularly C, N, O, Na and Al,
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Chemical Abundance Ratios and Gas-Phase Mixing in Dwarf Galaxy Evolution
Because of their low gravitational energies dwarf galaxies are greatly exposed to energetical influences by the interstellar medium, like e.g.\
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Chemical Abundances and Milky Way Formation
Stellar chemical element ratios have well-defined systematic trends as a function of abundance, with an excellent correlation of these trends
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Chemical Abundances and the Hierarchical Clustering
We studied the chemical enrichment of the interstellar medium and stellar population of the building blocks of current typical galaxies
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Chemical Abundances and Their Relation with PN Morphological Features
Results appeared since the last APN meeting on the relation between abundances and PNe morphological features are reviewed here. Statistical
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Chemical Abundances and Yields from Massive Stars
Stellar rotation produces an internal mixing of the elements due to shear instability and meridional circulation. This leads to observable
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Chemical Abundances in High-Redshift Neutral Clouds
Neutral hydrogen clouds with high column density detected towards distant quasars are unique probes of elemental nucleosynthesis and chemical evolution
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Chemical abundances in seven red giants of NGC 2360 and NGC 2447
Chemical abundances of about fifteen elements from oxygen to europium are measured in seven red giants of the two open
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Chemical Abundances in SFG and DLA
We investigate the chemical abundances of local star-forming galaxies which cause Damped Lyman Alpha lines. A metallicity versus redshift diagram
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Chemical abundances in Terzan 7 from UVES spectra
We present chemical abundances for Mg, Si, Ca and Fe for three red giants in the sparse globular cluster Terzan
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Chemical Abundances in the Carina dSph Galaxy
We report on the chemical abundances of stars in the Carina dwarf spheroidal galaxy (dSph) derived from low-resolution spectra. We
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Chemical Abundances in the Damped Lya Systems
I introduce and review the data and analysis techniques used to measure abundances in the damped Lya systems, quasar absorption-line
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Chemical Abundances of Bright Giants in the Mildly Metal-Poor Globular Cluster M4
We present a chemical composition analysis of three dozen giant stars in the nearby ``CN-bimodal'' mildly metal-poor (<[Fe/H]> = -1.18)
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Chemical Abundances of Extragalactic H II regions
The determination of the heavy element abundances from giant extragalactic H II regions is based on collisionally excited lines. We
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Chemical Abundances of NGC 5461 and NGC 5471 derived from Echelle Spectrophotometry
We present high resolution spectroscopic data of the two giant extragalactic H II regions NGC 5461 and NGC 5471 in
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Chemical abundances of RGB-Tip stars in the Sagittarius dwarf Spheroidal galaxy
We present preliminary iron abundances and $α$ element (Ca, Mg) abundance ratios for a sample of 22 Red Giant Branch
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Chemical abundances of $β$ Cephei stars from low- and high-resolution UV spectra
In early type stars the ultraviolet spectral region is important for several reasons. Firstly, since the majority of the total
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Chemical Abundance Variations in Globular Clusters: Recent Results from Mildly Metal-Poor M5
We present a chemical composition analysis of 36 giant stars in mildly metal-poor globular cluster M5. In comparing the M5
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Chemical analysis of 8 recently discovered extra-solar planet host stars
We present the chemical analysis of a new set of stars known to harbor low mass companions, namely HD 1237,
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Chemical and dynamical evolution in gas-rich dwarf galaxies
We study the effect of a single, instantaneous starburst in a gas-rich dwarf galaxy on the dynamical and chemical evolution
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Chemical and mass evolution of galaxies
An introduction is given to projects investigating galaxy evolution quantitatively by spectroscopic observations of very distant galaxies that have weak
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Chemical and Thermal History of the Intracluster Medium
Clusters of galaxies can be seen as giant astrophysical laboratories enclosing matter in a large enough volume, so that the
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Chemical anomalies in globular cluster red giant stars and the "second parameter" problem
We present the evolution of low mass and low metallicity RGB models computed under the assumption of deep mixing between
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Chemical Bond Type, Atom Packing, and Superconductivity of YBa2Cu3O7 and NaxWO3
The YBa2Cu3O8-x and NaxWO3 superconductors are treated not as an ionic compounds but rather as an arrays of atoms featuring
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