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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20210520T103000
DTEND;TZID=Atlantic/Canary:20210520T113000
UID:iactalks-1470
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1470
CREATED:2021-05-20T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Reconstructing the history of the Milky Way and probing the dark ma
 tter nature in WEAVE and LSST era
DESCRIPTION:Reconstructing the history of the Milky Way and probing the dar
 k matter nature in WEAVE and LSST era\nDr. Guillaume Thomas\n\nAt present,
  our understanding of the formation history of the         MW is limited d
 ue to the complexity of observing the imprints of         accretion events
  and of reproducing them in numerical         simulations. Moreover, thoug
 h being the only galaxy, in which         the Galactic potential can be pr
 obed in detail, the distribution         of mass in the MW, and hence
  of the dark matter, is poorly         constraint, especially at large dis
 tances. In addition, the MW is not isolated, and it has recently been
          suggested that the infall of the LMC can induce a perturbati
 on in the stellar and dark matter distribution         of the MW. As a con
 sequence, the details of the formation history of our Galaxy are stil
 l unknown, such as         the number of accretion events, the mass of the
  accreted galaxies, and the epoch of these events. Yet this         i
 nformation is crucial to understand our environment and to constrain 
 the theoretical models and         simulations that try to reproduce it.\n
 One of the major challenges of the field is that a tremendous         numb
 er of multi-aspect (astrometric, photometric and spectroscopic) obser
 vations at significant         depth is required to study the morphology, 
 the kinematics and the chemistry of the outskirts of our         Gala
 xy, where are located the signatures of these events. Hopefully, the 
 advent of recent and incoming         complementary large surveys, such as
  the European Gaia mission, UNIONS (Ultraviolet Near Infrared Optical
          Northern Survey), Pristine, Pan-STARRS (PS), WEAVE or LSST       
   (Legacy Survey of Space and Time), is offering a new global         poin
 t of view on our Galaxy’s halo, allowing us to precisely         pro
 be the Galactic potential our the MW, and to retrace         itsaccretion 
 history.\nIn this talk I will present recent works that have been         
 conducted to better catarerized our Galaxy and its history with         so
 me of the existing surveys mentioned above. In addition, I         will pr
 esent the major improvement that will bring this new         generation of
  large, multi-aspect surveys, to study both our         Galactic history, 
 as well as the fundamental nature of the dark         matter.
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