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PRODID:-//Heidelberg University//HePhySTO//EN
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BEGIN:VEVENT
DTEND:20261014T123000Z
UID:2a8254810d32dc80e1d124316f9b3de9@physik.uni-heidelberg.de
DTSTAMP:20261007T223302Z
LOCATION:ARI\, ARI library lounge
DESCRIPTION:Recent observations show that galaxies assembled rapidly and qu
 enched surprisingly early\, challenging existing galaxy-formation models. I
  will present a new implementation of the semi-analytic model L-Galaxies wi
 thin Gadget-4\, together with a fast\, parallelised multi-chain calibration
  framework.\n\nThe model introduces gas surface-density dependent star form
 ation and feedback\, updated stellar and gaseous disc instabilities\, and d
 issipative gas-rich mergers. These enable highly efficient star formation i
 n dense high-redshift galaxies and provide a more consistent description of
  galaxy evolution over (0<z<14). The model boosts the predicted UV luminosi
 ty function at  9<z<13 by up to two orders of magnitude and produces massiv
 e quenched galaxies as early as z~8\, while retaining good agreement with l
 ow-redshift galaxy abundances\, sizes\, radial profiles\, and metallicities
 . These improvements are achieved without modifying the cosmology\, IMF\, o
 r underlying AGN-feedback model. However\, the model still struggles to rep
 roduce compact and quenched galaxies\, highlighting open questions about th
 e formation and evolution of red nuggets and little red dots.\n\n[Talk will
  be 20+10]\n\nImported from https://www.physik.uni-heidelberg.de/hephysto/ 
 (no warranty for accuracy).
URL;VALUE=URI:https://www.physik.uni-heidelberg.de/hephysto/index.php?s=tal
 k&id=13040
SUMMARY:ARI Special Colloquium: Akash Vani - Building massive and quenched 
 galaxies through surface density-dependent star formation and feedback
DTSTART:20261014T120000Z
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