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SUMMARY:The Mass of the Large Magellanic Cloud
DTSTART;VALUE=DATE-TIME:20230322T163000Z
DTEND;VALUE=DATE-TIME:20230322T164500Z
DTSTAMP;VALUE=DATE-TIME:20241114T092442Z
UID:indico-contribution-205@meetings.aip.de
DESCRIPTION:Speakers: Laura Watkins (AURA for ESA\, STScI)\nThe Large Mage
 llanic Cloud (LMC) is the largest of the dwarf galaxies orbiting the Milky
  Way (MW). It sits in a very interesting niche within the Local Group (LG)
 \, being both sufficiently different in mass than the MW to be an interest
 ing comparison and sufficiently massive to be a major player in the MW's r
 ecent history and present state. In particular\, it is massive enough to h
 ave a significant and observable effect on the MW itself and on stellar st
 reams in the MW halo\, though the extent of its influence depends on its m
 ass. Its mass is also interesting as a benchmark against which we can inte
 rpret observations of more distant objects.\n\nBennet et al. (2022) recent
 ly measured proper motions (PMs) -- using HST\, Gaia or both HST and Gaia 
 together -- for a set of globular clusters (GCs) in the LMC. Supplemented 
 with literature distances and line-of-sight velocities\, this provides a c
 atalogue of 6D phase space information for 32 LMC GCs. These are ideal dyn
 amical tracers of the LMC’s potential.\n\nIn my talk\, I will describe h
 ow we have used this set of tracers to estimate the anisotropy and mass of
  the LMC within 13 kpc\, and then how we have used these estimates to extr
 apolate the LMC’s virial mass. This is the first time that this family o
 f mass estimation methods has been applied to the LMC\, and I will also co
 mpare our estimate against other estimates of the LMC’s mass via differe
 nt methods and discuss the broader context of our results.\n\nhttps://iaus
 379.aip.de/event/20/contributions/205/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/205/
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