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Lithium abundances of halo dwarfs
The discovery of the Spite plateau in the abundances of ^7^Li^ for metal-poor stars led to the determination of an observationally deduced primordial lithium abundance. However,... -
Abundances of Population II stars in NGC 6397
Evolutionary trends in the surface abundances of heavier elements have recently been identified in the globular cluster NGC 6397 ([Fe/H]=-2), indicating the operation of atomic... -
Abundances of NGC 6121 red giants
We present abundance analysis based on high resolution spectra of 105 isolated red giant branch (RGB) stars in the Galactic Globular Cluster NGC 6121 (M4). The data have been... -
Abundances of stars in lower main sequence
The aim of this paper is to provide fundamental parameters and abundances with a high accuracy for a large sample of cool main sequence stars. This study is part of wider... -
Line abundances for solar stars
We present the abundance measurements of several elements (Fe, Ca, Na, Ni, Ti, Al, Cr, Si) for 20 solar-type stars belonging to four Galactic open clusters: NGC 3680, IC 4651,... -
Abundances of giants in four Galactic clusters
To constrain the formation and chemical evolution of the Galactic disk, we surveyed open clusters of different ages, metal contents, and distances form the Galactic centre. We... -
Nearby B-type stars abundances
The recent downward revision of the solar photospheric abundances now leads to severe inconsistencies between the theoretical predictions for the internal structure of the Sun... -
CN and CH line strengths in 8 Galactic GlCl
Our work focuses on the understanding of the origin of CNO-anomalies, which have been detected in several Galactic globular clusters. The novelty and advantage of this study is... -
Bulge field stars from FLAMES-GIRAFFE spectra
We determine the iron distribution function (IDF) for bulge field stars, in three different fields along the Galactic minor axis and at latitudes b=-4{deg}, b=-6{deg}, and... -
Abundances of giants in five Galactic clusters
To constrain the formation and chemical evolution of the Galactic disk, we surveyed open clusters of different ages, metal contents, and distances form the Galactic centre. We... -
Classification of planetary nebulae
In this paper we present a re-analysis of the criteria used to characterize the Peimbert classes I, IIa, IIb, III and IV, through a statistical study of a large sample of... -
Li abundances in solar-analog stars
It is known that the surface lithium abundances of field solar-analog G dwarfs show a large dispersion of >~2dex (among which our Sun is located at the lower end) despite the... -
Manganese abundances in the Galactic disk
Manganese is an iron-peak element and although the nucleosynthesis path that leads to its formation is fairly well understood, it remains unclear which objects, SN II and/or SN... -
Abundances of Galactic Bulge red giants
This paper investigates the peculiar behaviour of the light elements (even, e.e. alpha-elements, and odd atomic numbers) in red giants of the galactic bulge, both in terms of... -
Oxygen abundances in nearby stars
The abundances of iron and oxygen are homogeneously determined in a sample of 523 nearby (d<150pc) FGK disk and halo stars with metallicities in the range... -
Abundances in 53 HII regions
Continuing the systematic determination of the electron temperature of HII regions using the Balmer and/or Paschen discontinuities by Guseva et al. (2006ApJ...644..890G) we... -
Nearby early-type gal. with ionized gas. III.
The paper is devoted to the study of the underlying stellar population of a sample of 62 nearby early-type galaxies, predominantly located in low density environments, a large... -
Chemical compositions of 48 WR planetary nebulae
Chemical compositions and other properties of planetary nebulae around central stars of spectral types [WC], [WO], and wels are compared with those of "normal" central stars, in... -
Abundance of nine beta Cephei stars
Seismic modelling of the beta Cephei stars promises major advances in our understanding of the physics of early B-type stars on (or close to) the main sequence. However, a... -
Abundances of 26 barium stars. I.
The abundances for Na, Al, alpha-, iron-peak, s-, and r-elements have been derived by using spectrum synthesis for a sample of 26 barium stars, including dwarf barium stars....
