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SUMMARY:The fundamental plane of massive galaxies: confronting observation
 s with realistic simulations - Anna de Graaff (Leiden)
DTSTART:20220218T113000Z
DTEND:20220218T123000Z
UID:TALK166591@talks.cam.ac.uk
CONTACT:Martin Haehnelt
DESCRIPTION:The Fundamental Plane (FP)\, a tight scaling relation between 
 galaxy size\, velocity dispersion\, and luminosity\, offers unique insight
  into the structural evolution of galaxies. However\, studies of the FP th
 us far have been limited by the difficulty in obtaining stellar kinematics
  measurements at z>0. The LEGA-C survey has recently delivered the largest
  census of galaxy stellar kinematics at z~0.8\, comprising a sample of ~30
 00 massive galaxies\, and enabled the first comprehensive study of the FP 
 at z>0. I will discuss the effects of structural and stellar population pr
 operties on the FP\, and show that the relation is surprisingly stable acr
 oss 0<z<1\, despite strong evolution in the sizes and stellar populations 
 of galaxies. Using cosmological simulations\, I will show how colour gradi
 ents and measurement biases play a critical role in the physical interpret
 ation of these observations. Hence\, I will show that the observed propert
 ies and evolution of the FP arise from systematic variations in the dark m
 atter content of galaxies.
LOCATION:via zoom 
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