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Grids of stellar models with rotation - I. Models from 0.8 to 120 M⊙ at solar metallicity (Z = 0.014)
- S. Ekstrom, C. Georgy, A. Maeder
- Physics
- 23 October 2011
Aims. Many topical astrophysical research areas, such as the properties of planet host stars, the nature of the progenitors of different types of supernovae and gamma ray bursts, and the evolution of…
Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
- T. Decressin, G. Meynet, C. Charbonnel, N. Prantzos, S. Ekstrom
- Physics
- 13 November 2006
Aims. We propose the Wind of Fast Rotating Massive Stars scenario to explain the origin of the abundance anomalies observed in globular clusters. Methods. We compute and present models of fast…
Thermohaline instability and rotation-induced mixing - III. Grid of stellar models and asymptotic asteroseismic quantities from the pre-main sequence up to the AGB for low- and intermediate-mass…
- N. Lagarde, T. Decressin, C. Charbonnel, P. Eggenberger, S. Ekstrom, A. Palacios
- Geology, Physics
- 23 April 2012
Context. The availability of asteroseismic constraints for a large sample of stars from the missions CoRoT and Kepler paves the way for various statistical studies of the seismic properties of…
Signatures of intrinsic Li depletion and Li-Na anti-correlation in the metal-poor globular cluster NGC 6397 ,
- K. Lind, F. Primas, C. Charbonnel, F. Grundahl, M. Asplund
- Physics
- 16 June 2009
Context. To alleviate the discrepancy between the prediction of the primordial lithium abundance in the universe and the abundances observed in Pop II dwarfs and subgiant stars, it has been suggested…
Thermohaline instability and rotation-induced mixing I. Low- and intermediate-mass solar metallicity stars up to the end of the AGB
- C. Charbonnel, N. Lagarde
- Physics
- 28 June 2010
Context. Numerous spectroscopic observations provide compelling evidence for non-canonical processes that modify the surface abundances of low- and intermediate-mass stars beyond the predictions of…
Stellar mass and age determinations - I. Grids of stellar models from Z = 0.006 to 0.04 and M = 0.5 to 3.5 M⊙
- N. Mowlavi, P. Eggenberger, L. Eyer
- Physics, Geology
- 17 January 2012
Aims. We present dense grids of stellar models suitable for comparison with observable quantities measured with great precision, such as those derived from binary systems or planet-hosting stars.…
“Sculptor-ing” the Galaxy? The Chemical Compositions of Red Giants in the Sculptor Dwarf Spheroidal Galaxy
- D. Geisler, V. Smith, G. Wallerstein, G. González, C. Charbonnel
- Physics
- 2 December 2004
We used high-resolution, high signal-to-noise ratio spectra obtained with the Very Large Telescope and the UV-Visual Echelle Spectrograph to determine abundances of 17 elements in four red giants in…
Elemental abundances in the atmosphere of clump giants
- T. Mishenina, O. Bienaym'e, V. Kovtyukh
- Physics
- 24 May 2006
Aims. The aim of this paper is to provide the fundamental parameters and abundances for a large sample of local clump giants with a high accuracy. This study is a part of a big project, in which the…
The lithium content of the Galactic Halo stars
- C. Charbonnel, F. Primas
- Physics
- 1 November 2005
Thanks to the accurate determination of the baryon density of the universe by the recent cosmic microwave background experiments, updated predictions of the standard model of Big Bang nucleosynthesis…
Abundances of neutron-capture elements in stars of the Galactic disk substructures
- T. Mishenina, M. Pignatari, N. Basak
- Physics
- 7 March 2013
Aims. The aim of this work is to present and discuss the observations of the iron peak (Fe, Ni) and neutron-capture element (Y, Zr, Ba, La, Ce, Nd, Sm, and Eu) abundances for 276 FGK dwarfs, located…
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