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Lithium and magnetic fields in giant stars: HD 232 862: a magnetic and lithium-rich giant
(Astronomy & Astrophysics, 2009-07-22)
Lithium abundance in lower red giant branch stars of Omega Centauri
(EDP Sciences, 2018-10)
We present Li, Na, Al, and Fe abundances of 199 lower red giant branch star members of the stellar system Omega Centauri, using high-resolution spectra acquired with FLAMES at the Very Large Telescope. The A(Li) distribution ...
Low-mass, helium-enriched PG1159 stars: a possible evolutionary origin and the implications for their pulsational stability properties
(EDP Sciences, 2007-12)
Aims. We examine a recently-proposed evolutionary scenario that could explain the existence of the low-mass, helium-enriched PG 1159 stars. We focus in particular on studying the pulsational stability properties of the ...
The DR14 APOGEE-TGAS catalogue: Precise chemo-kinematics in the extended solar vicinity
(Cambridge University Press, 2017)
Elemental abundances and classification of carbon-enhanced metal-poor stars
(EDP SCIENCES S ALES ULIS CEDEX A, 2012)
We present a detailed study of carbon-enhanced metal-poor (CEMP) stars, based on high-resolution spectroscopic observations of a sample of 18 stars. The stellar spectra for this sample were obtained at the 4.2 m William ...
Normal A0−A1 stars with low rotational velocities: I. Abundance determination and classification
(EDP Sciences, 2014-02)
Context: The study of rotational velocity distributions for normal stars requires an accurate spectral characterization of the objects in order to avoid polluting the results with undetected binary or peculiar stars. This ...
Possible signature of hypernova nucleosynthesis in a beryllium-rich halo dwarf
(WILEY-BLACKWELL, 2008)
As part of a large survey of halo and thick disc stars, we found one halo star, HD106038, exceptionally overabundant in beryllium. In spite of its low metallicity, [Fe/H] = -1.26, the star has log(Be/H) = -10.60, which is ...
Spectroscopic variability and magnetic fields of HgMn stars
(Wiley Vch Verlag, 2011-12)
The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the ...