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In this paper we analyze the kinematics and dynamics of the nearby early-type   galaxy NGC 821 based on its globular clusters (GCs) and planetary nebulae   (PNe). We use PNe and GCs to extract the kinematics of NGC 821 which is then   used for the dynamical modelling based on the Jeans equation. We apply the   Jeans equation using the Newtonian mass-follows-light approach assuming   constant mass-to-light ratio and find that using such an approach we can   successfully fit the kinematic data. The inferred constant mass-to-light   ratio, 4:2 < M=LB < 12:4 present throughout the whole galaxy, implies the   lack of significant amount of dark matter. We also used three different MOND   approaches and found that we can fit the kinematic data without the need for   additional, dark, component. [Projekat Ministarstva nauke Republike Srbije,   br. 176021: Visible and invisible matter in nearby galaxies: theory and   observations

Low dark matter content of the nearby early-type galaxy NGC 821