Browsing Physics & Atmospheric Science by Author "Dalessandro, Emanuele"
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Do globular clusters possess Dark Matter halos? A case study in NGC 2419
Ibata, Rodrigo; Nipoti, Carlo; Sollima, Antonio; Bellazzini, Michele; Chapman, Scott; Dalessandro, Emanuele (2012-10-29)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 Galactic halo satellite is embedded in a ... -
Polytropic model fits to the globular cluster NGC 2419 in Modified Newtonian Dynamics
Ibata, Rodrigo; Sollima, Antonio; Nipoti, Carlo; Bellazzini, Michele; Chapman, Scott; Dalessandro, Emanuele (2011-10-18)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 structure and kinematics of the system. We ...