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SUMMARY:Velocity dipoles in the halos of FIRE simulated galaxies
DTSTART;VALUE=DATE-TIME:20230323T091600Z
DTEND;VALUE=DATE-TIME:20230323T091800Z
DTSTAMP;VALUE=DATE-TIME:20241114T092449Z
UID:indico-contribution-273@meetings.aip.de
DESCRIPTION:Speakers: Alex Riley (Durham University)\nOne major source of 
 disequilibrium in the Milky Way is its most massive satellite\, the LMC. K
 inematics of distant halo tracers show a velocity dipole in the Milky Way 
 halo\, which has been interpreted using N-body simulations as the LMC indu
 cing a reflex motion in the Milky Way disk. In this talk\, I discuss apply
 ing this framework to more realistic halos comprised of substructure from 
 the FIRE-2 zoom-in cosmological simulations. Velocity dipoles are resolved
  in Milky Way-mass hosts experiencing an LMC-like interaction and evolve i
 n a manner consistent with a two-body interaction between the stellar disk
  and the LMC analog. The magnitude of this dipole can be used to constrain
  the mass ratio of the Milky Way and LMC. However\, satellite galaxies and
  stellar streams can create velocity dipoles in systems that aren't experi
 encing a major satellite accretion\, suggesting that care must be taken to
  remove substructure in the Milky Way observations.\n\nhttps://iaus379.aip
 .de/event/20/contributions/273/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/273/
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