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Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies
(EDP SCIENCES, 2016-04)
Context. Low-mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used ...
Analysis of chemical abundances in planetary nebulae with [WC] central stars II. Chemical abundances and the abundance discrepancy factor
(EDP Sciences, 2013)
Aims. We present the abundance analysis of 12 planetary nebulae ionized by [WC]-type stars and weak-emission-line stars (wels)
obtained from high-resolution spectrophotometric data. Our main aims are to determine the ...
Exploring the 13CO/C18O abundance ratio towards Galactic young stellar objects and H II regions
(EDP Sciences, 2018-04)
Aims. Determining molecular abundance ratios is important not only for the study of Galactic chemistry, but also because they are useful to estimate physical parameters in a large variety of interstellar medium environments. ...
DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
(Universidad de Magallanes, 2009)
Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies
(2016)
Context. Low-mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used ...
The Gaia-ESO survey: the non-universality of the age–chemical-clocks–metallicity relations in the Galactic disc
(European Southern Observatory, 2020)
Context. In the era of large spectroscopic surveys, massive databases of high-quality spectra coupled with the products of the Gaia satellite provide tools to outline a new picture of our Galaxy. In this framework, an ...
Biological traits and field distribution of introduced Arhopalus species in Central Argentina
(Taylor & Francis Ltd, 2020-09)
Arhopalus rusticus rusticus and Arhopalus syriacus (Coleoptera: Cerambycidae) are exotic forestry pests that coexist in Córdoba (Argentina). To contribute to forest management strategies, we examined how their emergence, ...
Galactic evolution of sulphur as traced by globular clusters
(EDP SCIENCES S A, 2015)
Context. Sulphur is an important volatile a element, but its role in the Galactic chemical evolution is still uncertain, and more observations constraining the sulphur abundance in stellar photospheres are required.
Origin of the heavy elements in HD 140283 Measurement of europium abundance
(EDP SCIENCES S ALES ULIS CEDEX A, 2012-12)
Context. HD 140283 is a nearby (V = 7.7) subgiant metal-poor star, extensively analysed in the literature. Although many spectra have been obtained for this star, none showed a signal-to-noise (S/N) ratio high enough to ...