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- Centre National de la Recherche ScientifiqueFR463 papers
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73 papers · 1 filter
Toward the general RGB slope-metallicity-age calibration: I Metallicities, Ages and Kinematics for Eight LMC Clusters
Saurabh Sharma, J. Borissova, R. Kurtev +2
In this paper, we discuss the properties of CMDs, age, metallicity and radial velocities of eight massive LMC clusters using data taken from FORS2 multiobject spectrograph at the 8…
Experimental Bell inequality violation without the postselection loophole
G. Lima, G. Vallone, A. Chiuri +2
We report on an experimental violation of the Bell-Clauser-Horne-Shimony-Holt (Bell-CHSH) inequality using energy-time entangled photons. The experiment is not free of the locality…
Abundance analysis of a sample of evolved stars in the outskirts of Omega Centauri
Sandro Villanova, Giovanni Carraro, Riccardo Scarpa +1
The globular cluster Centauri (NGC 5139) is a puzzling stellar system harboring several distinct stellar populations whose origin still represents a unique astrophysical challe…
Ultra-High Energy Cosmic Rays Detected by Auger and AGASA:Corrections for Galactic Magnetic Field Deflections, Source Populations, and Arguments for Multiple-Components
Neil M. Nagar, Javier Matulich
The origin and composition of Ultra-High Energy Cosmic Ray Events (UHECRs) are under debate. Here we improve constraints on the source population(s) and compositions of UHECRs by a…
Multiple stellar populations in the Galactic globular cluster NGC 6752
A. P. Milone, G. Piotto, I. R. King +6
We have carried out high-precision photometry on a large number of archival HST images of the Galactic globular cluster NGC 6752, to search for signs of multiple stellar population…
CaII Triplet Spectroscopy of Small Magellanic Cloud Red Giants. II. Abundances for a Sample of Field Stars
M. C. Parisi, D. Geisler, A. J. Grocholski +2
We have obtained metallicities of ~ 360 red giant stars distributed in 15 Small Magellanic Cloud (SMC) fields from near-infrared spectra covering the CaII triplet lines using the V…