BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Equilibrium dynamical models for the Large Magellanic Cloud
DTSTART;VALUE=DATE-TIME:20230320T110000Z
DTEND;VALUE=DATE-TIME:20230320T111500Z
DTSTAMP;VALUE=DATE-TIME:20241114T092409Z
UID:indico-contribution-207@meetings.aip.de
DESCRIPTION:Speakers: Nikolay Kacharov (AIP)\nThe Large Magellanic Cloud (
 LMC) has a complex dynamics driven by both internal and external processes
 . The external forces are due to tidal interactions with the Small Magella
 nic Cloud (SMC) and the Milky Way\, while internally its dynamics mainly d
 epends on the stellar\, gas\, and dark matter mass distributions. Despite 
 the overall complexity of the system\, very often simple physical models c
 an give us important insights about the main driving factors. Here we focu
 s on the internal forces and attempt to model the proper motions (PM) of ~
 1 000 000 stars in the LMC as measured by Gaia with an axisymmetric dynami
 cal model\, based on the Jeans equations. We test both cored and cusped sp
 herical Navarro-Frenk-White (NFW) dark matter halos to fit the LMC gravita
 tional potential. We find that this simple model is very successful at sel
 ecting a clean sample of genuine LMC member stars and correctly predicts t
 he geometry and orientation of the LMC with respect to the observer withou
 t additional prior information. Our Jeans dynamical models describes well 
 the mean velocity and velocity dispersion of the LMC stellar disc\, howeve
 r it fails to describe the motions of the LMC bar\, which is a non-axisymm
 etric feature dominating the central region. We plan a triaxial Schwarzsch
 ild approach as a next step for the dynamical modelling of the LMC.\n\nhtt
 ps://iaus379.aip.de/event/20/contributions/207/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/207/
END:VEVENT
END:VCALENDAR