Constraining the History of the Sagittarius Dwarf Galaxy Using Observations of Its Tidal Debris
Constraining the History of the Sagittarius Dwarf Galaxy Using Observations of Its Tidal Debris
We present a comparison of semianalytic models of the phase-space structure of tidal debris with measurements of average distances, velocities, and surface densities of stars associated with the Sagittarius dwarf galaxy, compiled from all observations reported since its discovery in 1994. We find that several interesting features in the data …