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- Centre National de la Recherche ScientifiqueFR478 papers
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85 papers · 1 filter
The Gaia-ESO Survey: Probing the lithium abundances in old metal-rich dwarf stars in the Solar vicinity
M. L. L. Dantas, G. Guiglion, R. Smiljanic +14
We test a scenario in which radial migration could affect the Li abundance pattern of dwarf stars in the solar neighbourhood. This may confirm that the Li abundance in these stars…
A comment on Metric vs Metric-Affine Gravity
Ulf Lindström, Özgür Sarıoğlu
We consider the sum of the Einstein-Hilbert action and a Pontryagin density (PD) in arbitrary even dimension . All curvatures are functions of independent affine (torsionless) c…
The chemical compositions of multiple stellar populations in the globular cluster NGC 2808
M. Carlos, A. F. Marino, A. P. Milone +8
Pseudo two-colour diagrams or Chromosome maps (ChM) indicate that NGC 2808 host five different stellar populations. The existing ChMs have been derived by the Hubble Space Telescop…
OptiRica: Towards an Efficient Optimizing Horn Solver
Hossein Hojjat, Philipp Rümmer
This paper describes an ongoing effort to develop an optimizing version of the Eldarica Horn solver. The work starts from the observation that many kinds of optimization problems,…
Spectral Clustering for Jet Reconstruction
G. Cerro, S. Dasmahapatra, H. A. Day-Hall +4
We present a new approach to jet definition alternative to clustering methods, such as the anti- scheme, that exploit kinematic data directly. Instead the new method uses kine…
Accretion process, magnetic fields, and apsidal motion in the pre-main sequence binary DQ Tau
Kim Pouilly, Oleg Kochukhov, Ágnes Kóspál +3
Classical T Tauri stars (CTTSs) are young stellar objects that accrete materials from their accretion disc influenced by their strong magnetic field. The magnetic pressure truncate…