Обзор современных оценок массы Галактики

Abstract

An overview of the methods used to estimate the mass of the Galaxy and the results obtained by various authors recently according to modern data is given. In particular, the estimates obtained based on the analysis of the galactic rotation curve, on the kinematics of the Galactic dwarf satellites and globular clusters, on the streams of such dwarf galaxies, on escape speed, as well as on halo stars are considered. Estimates of the Galaxy mass in the form $M (<r)$, $M_{\rm 200}$ and $M_{\rm vir}$ are considered. According to 20 individual estimates, the average value was found $\overline M_{\rm 200}=0.88\times 10^{12}~M_\odot$ with a dispersion of $0.24\times 10^{12}~M_\odot$ and a weighted average error of $0.06\times 10^{12}~M_\odot$. According to 25 individual estimates, $\overline M_{\rm vir}=1.02\times10^{12}~M_\odot$ was obtained with a dispersion of $0.41\times 10^{12}~M_\odot$ and a weighted average error of $0.09\times10^{12}~M_\odot$.