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SUMMARY:Bar chrono-kinematics and its link to the Galactic disc formation 
 - Hanyuan Zhang / IoA
DTSTART:20241030T131500Z
DTEND:20241030T134000Z
UID:TALK223978@talks.cam.ac.uk
CONTACT:Xander Byrne
DESCRIPTION:The galactic bar is a common structure in the Universe\; appro
 ximately two-thirds of spiral galaxies host a bar at their centers. Due to
  its non-axisymmetric nature\, the galactic bars influence not only the dy
 namics of the surrounding stars but also reshape the galactic disk and hal
 o. Therefore\, understanding galactic bars is crucial for telling the stor
 y of galaxy evolution in general. Our Milky Way provides a unique opportun
 ity to study the kinematics and dynamics of the Galactic bar in detail\, a
 s we can resolve individual stars in phase space. By complementing the kin
 ematics of stars with ages\, we have chances to decode the history of the 
 inner Galaxy. We present the chrono-kinematic signature of the inner Galax
 y traced by Mira variable stars. Observing the evolution of bar morphology
  and kinematics with age allows us to explore the heating history of the i
 nner Milky Way. We establish a connection between the bar chrono-kinematic
  evolution and the formation of the Galactic disk\, providing a novel and 
 independent constraint on the epoch of the Milky Way disk formation.
LOCATION:The Hoyle Lecture Theatre + Zoom 
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