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SUMMARY:Physikalisches Kolloquium: Dr. Paul Bennet - Proper Motions in
  and beyond the Local Group of Galaxies
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 00000010000000BEB060FEC9762C43927071AB32719CD2
DESCRIPTION:Titel: Proper Motions in and beyond the Local Group of Gal
 axies Abstract: Proper motions are the on sky motions of astronomical 
 objects. Unlike line of sight velocities\, that can be readily obtaine
 d from spectroscopy\, proper motions are very difficult to determine f
 or most objects requiring extremely precise measurements of position i
 n the sky separated by many years. This means\, for most objects\, the
 y are the final components of position velocity information to be obta
 ined. With full 6D position-velocity information we can tell not only 
 the present of an object but use its trajectory to understand its past
  and future. This allows us to examine many problems in astrophysics a
 nd physics more broadly\, such as when and where do galaxies stop form
 ing new stars and what is the dark matter content of the Milky Way? It
  also gives insight in the nature of dark matter models including if d
 ark matter is self-interacting or a purely non-interactive particle. S
 precher / Speaker: Dr. Paul Bennet\, Space Telescope Science Institute
 \, Baltimore Kontakt / Contact: Prof. Dr. Jörn Wilms
DTSTART:20260603T100000Z
DTEND:20260603T110000Z
LOCATION:Hörsaal D\, Staudtstr. 5\, 91058 Erlangen
DTSTAMP:20260422T001258Z
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