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SUMMARY:External Colloquium | Oscar Agertz (Lund Universtiy)
DTSTART:20251204T133000Z
DTEND:20251204T143000Z
DTSTAMP:20261022T210318Z
UID:www.aip.de-2345
CATEGORIES:Scientific
CATEGORIES:Scientific Talk
CATEGORIES:Public
CATEGORIES:Colloquium
CONTACT:Ewald Puchwein <epuchwein@aip.de>
DESCRIPTION:Speaker: Oscar Agertz (Lund Universtiy)\nTitle: Early Galactic
  Disks and Their Connections to Present-Day Galaxies\nAbstract: Recent obs
 ervations with JWST and ALMA have revealed that a substantial fraction of 
 galaxies at very high redshift are rotationally supported disks. Many of t
 hese systems exhibit kinematically cold\, or “settled\,” gaseous disks
  — a result that stands in tension with predictions from many galaxy for
 mation models. In this seminar\, I will provide an overview of the current
  state of cosmological simulations of disk galaxy formation. I will discus
 s the properties of gas-rich high-redshift disks\, their turbulent nature\
 , and the connections between these early phases of disk assembly and spec
 troscopic and astrometric observations of the Milky Way. Finally\, I will 
 present new results indicating that baryon-dominated\, highly turbulent ga
 laxies may be more susceptible to global gravitational instabilities\, suc
 h as bar formation\, than previously thought. These findings have importan
 t implications for the rapid formation of bulges and for the fueling of ce
 ntral black holes.\n
LOCATION:AIP\; Kirch building\, Conference room
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