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SUMMARY:Kinematics features of the Milky Way globular clusters - Andres Pi
 atti (Universidad Nacional de Cordoba\, Argentine)
DTSTART:20190925T124500Z
DTEND:20190925T131500Z
UID:TALK127873@talks.cam.ac.uk
CONTACT:Catrina Diener
DESCRIPTION:We report results on the kinematics of Milky Way globular clus
 ters based on updated space velocities for nearly the entire globular clus
 ter population.  We found that a 3D space with the semi-major axis\, the e
 ccentricity and the inclination of the orbit with respect to the Milky Way
  plane as its axes is helpful in order to dig into the formation of the gl
 obular cluster system. We find that globular clusters formed in-situ show 
 a clear correlation between their eccentricities and their orbital inclina
 tion in the sense that clusters with large eccentricities also have large 
 inclinations. Accreted globular clusters  do not exhibit a relationship be
 tween eccentricity and inclination\, but span a wide variety of inclinatio
 ns at eccentricities larger than 0.5. These findings can be interpreted as
  if globular clusters formed from gas that collapsed radially in the outsk
 irts\, with preference for relative high infall angles. As the material re
 ached the rotating forming disc\, it became more circular and moved with l
 ower inclination relative to the disc. A half of the \nglobular cluster po
 pulation was accreted and deposited in orbits covering the entire range of
  energies from the outer halo to the bulge.
LOCATION:Sackler Lecture Theatre\, IoA
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