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SUMMARY:Are the orbital poles of the Milky Way streams pointing to a past 
 Milky Way-Andromeda interaction?
DTSTART;VALUE=DATE-TIME:20230321T090100Z
DTEND;VALUE=DATE-TIME:20230321T090300Z
DTSTAMP;VALUE=DATE-TIME:20240704T115724Z
UID:indico-contribution-246@meetings.aip.de
DESCRIPTION:Speakers: Elena Asencio (University of Bonn)\nUnderstanding th
 e origin of the stellar streams around the Milky Way can be of great relev
 ance to learn about the history of the Milky Way and the formation of its 
 substructures. A previous study on the Milky Way streams (Pawlowski et al.
  2012) showed that many of these (7 out of 14) present a similar orientati
 on to that of the disk of satellite galaxies (DoS) and the young globular 
 clusters of the Milky Way. This suggests that the DoS\, the young globular
  clusters and a large fraction of the Milky Way streams have a correlated 
 origin. The authors named this group of subsystems the ``Vast POlar Struct
 ure" (VPOS)\, and proposed that it could have formed as a result of a past
  interaction between the Milky Way and the Andromeda galaxy. A more recent
  study (Riley et al. 2020) analysed 64 Milky Way streams and concluded tha
 t there is no evidence of clustering around the VPOS direction in the orbi
 tal poles of the Milky Way streams once the newly discovered streams are t
 aken into account. In this work\, we revise the distrubution of the orbita
 l poles of the Milky Way streams in light of the latest stream dataset\, w
 hich includes a total of 97 streams\, improved measurments of their positi
 ons and dynamics and a more reliable method for obtaining their orbital po
 les.\n\nhttps://meetings.aip.de/event/20/contributions/246/
LOCATION:Haus H\, Telegrafenberg
URL:https://meetings.aip.de/event/20/contributions/246/
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