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SUMMARY:A story of galaxy mass assembly from dynamical modelling of nearby
  galaxies
DTSTART;VALUE=DATE-TIME:20230323T142000Z
DTEND;VALUE=DATE-TIME:20230323T142200Z
DTSTAMP;VALUE=DATE-TIME:20241114T092450Z
UID:indico-contribution-227@meetings.aip.de
DESCRIPTION:Speakers: Sabine Thater (University of Vienna)\nUnderstanding 
 the mass assembly of galaxies is one of the big open questions in astronom
 y. A dynamical analysis of galaxies of the ATLAS3D survey provides new clu
 es about the galaxy evolution process of galaxies as the sample comprises 
 a good mix of fast and slow rotators with very different growing scenarios
 . Slow rotators are thought to accrete about 50 per cent of their stellar 
 mass from satellite galaxies and their most massive progenitors have on av
 erage up to three major mergers during their evolution. Fast rotators in c
 ontrast\, accrete less than 50 per cent and have on average less than one 
 major merger in their past. But what is the imprint of the different evolu
 tionary scenarios on the mass distribution and intrinsic shape of galaxies
 ?\n\nI will present a detailed dynamical study of the massive fast- and sl
 ow-rotator galaxies in the ATLAS3D survey with the Schwarzschild code DYNA
 MITE\, that models galaxies as a superposition of their stellar orbits and
  colours those orbits with ages and metallicities. Using this full set of 
 observables\, I will quantify how tightly we can constrain the intrinsic s
 hape and distribution of the visible and invisible matter in nearby early-
 type galaxies and relate it with the evolutionary scenarios. Compared to p
 revious studies\, triaxial modelling is essential for these galaxies to un
 derstand their complex kinematical features. I will conclude the discussio
 n on what we can learn by comparison with dynamical studies of the Milky W
 ay in order to learn about the dark past of galaxies.\n\nhttps://iaus379.a
 ip.de/event/20/contributions/227/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/227/
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