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Euclid. I. Overview of the Euclid mission
Euclid Collaboration, Y. Mellier, Abdurro'uf +1134
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Eucl…
Do globular clusters possess Dark Matter halos? A case study in NGC 2419
Rodrigo Ibata, Carlo Nipoti, Antonio Sollima +3
We use recently published measurements of the kinematics, surface brightness and stellar mass-to-light ratio of the globular cluster NGC 2419 to examine the possibility that this G…
Polytropic model fits to the globular cluster NGC 2419 in Modified Newtonian Dynamics
Rodrigo Ibata, Antonio Sollima, Carlo Nipoti +3
We present an analysis of the globular cluster NGC 2419, using a polytropic model in Modified Newtonian Dynamics (MOND) to reproduce recently published high quality data of the str…
The globular cluster NGC 2419: a crucible for theories of gravity
R. Ibata, A. Sollima, C. Nipoti +3
We present the analysis of a kinematic data set of stars in the globular cluster NGC 2419, taken with Keck/DEIMOS. Combined with a reanalysis of deep HST and Subaru imaging data, w…