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SUMMARY:Discrete Schwarzschild models of dwarf spheroidal galaxies: New te
 sts of the dark matter distribution.
DTSTART;VALUE=DATE-TIME:20230320T114900Z
DTEND;VALUE=DATE-TIME:20230320T115100Z
DTSTAMP;VALUE=DATE-TIME:20241114T092411Z
UID:indico-contribution-237@meetings.aip.de
DESCRIPTION:Speakers: Erik Aquino Ortíz (Instituto de Astrofísica\, Pont
 ificia Universidad Católica de Chile)\nAn accurate and unambiguous determ
 ination of the inner distribution of dark matter in dwarf spheroidal (dSph
 ) galaxies has proven to be a challenge for a few decades now. Some of the
  complications include the degeneracies inherent to the dynamics of stella
 r systems\, but also the limits of the available data (e.g.\, just one com
 ponent of the 3D space velocities of the tracers)\, and the need for simpl
 ifying assumptions of the analysis methods typically employed. In this con
 tribution\, we will present initial results from applying our fully discre
 te axisymmetric Schwarzschild code to this problem. We first study mock da
 tasets for dSph galaxies from the Gaia Challenge\, which help us identify 
 the pros and cons on the tool we use\, and understand the limits imposed b
 y the degeneracies inherent to the problem. We explore datasets of various
  sizes\, and all combination of available velocity components\, i.e.\, onl
 y line-of-sight velocities\, only proper motions\, and both. Our methodolo
 gy also avoids restrictive assumptions about the degree of orbital (an)iso
 tropy. We then apply the tool to line-of-sight velocity data for the Sculp
 tor and Fornax dwarfs\, and compare our preliminary results to published w
 ork.\n\nhttps://iaus379.aip.de/event/20/contributions/237/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/237/
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