THE MASS OF THE MILKY WAY BASED ON THE KINEMATICS OF SATELLITES
Аннотация и ключевые слова
Аннотация (русский):
The Milky Way satellite system is the most studied group of galaxies. Currently, 64 satellites within 260 kpc are known. We have measured high-precision distances, radial and tangential velocities for most of them. We have estimated the total mass of our galaxy to be $M=(7.9\pm2.1)\times10^{11}$ $M_\odot$ using a modification of the projected mass method that takes into account the three-dimensional distribution of galaxies in the group, assuming an isotropic distribution of satellite orbits. The infall of galaxies located outside the virial zone at a distance of 400 kpc allows us to estimate the mass of the system to be of the order of $9\times10^{11}$ $M_\odot$, which is in excellent agreement with the mass inside the virial zone of our Galaxy.

Ключевые слова:
The Galaxy; Galaxy: kinematics and dynamics
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