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SUMMARY:Metal-poor stellar streams and satellites. - Prof Kim Venn (Univer
 sity of Victoria\, Canada)
DTSTART:20231012T150000Z
DTEND:20231012T160000Z
UID:TALK206389@talks.cam.ac.uk
CONTACT:107123
DESCRIPTION:The exquisite data from Gaia has made it possible to identify 
 signs of  the ancient accretions that built up our Galaxy.  When combined 
 with high quality spectra\, the chemical and dynamical analyses of stellar
  streams (found from conserved dynamical quantities) and nearby satellites
  (with improved memberships from precision proper motions) can be compared
 . In this talk\, I will discuss newly discovered stellar streams that impa
 ct models of the ancient star formation properties of dwarf galaxies. Addi
 tionally\, chemical analyses of old stars in the extreme outskirts of near
 by dwarf galaxies can be used to identify early star formation events\, la
 te time mergers\, and/or tidal stripping caused by multiple orbits around 
 the Galaxy.
LOCATION:Hoyle Lecture Theatre\, Institute of Astronomy
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