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SUMMARY:Proper Motions of M31 Satellite Galaxies: M31 Mass\, Satellite Orb
 its\, and the Dynamical State of the Satellite Plane
DTSTART;VALUE=DATE-TIME:20230321T103000Z
DTEND;VALUE=DATE-TIME:20230321T105500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115724Z
UID:indico-contribution-172@meetings.aip.de
DESCRIPTION:Speakers: Tony Sohn (Space Telescope Science Institute)\nPrope
 r motions (PMs) from HST and Gaia have revolutionized the field of Galacti
 c archaeology in the Milky Way (MW). However\, PM studies in and around ou
 r neighbor spiral galaxy M31 are still in their early stages with measurem
 ents being available for only a few satellites and M31 itself at the momen
 t. Gaia can only detect some of the brightest stars in star forming region
 s at the distance of M31\, so HST and JWST remain the only reliable option
 s for measuring PMs of M31 satellite dwarf spheroidals. Three-dimensional 
 kinematics based on PM measurements of satellites will allow constraining 
 the total mass of M31 and testing the dynamical stability of the Great Pla
 ne of Andromeda. Furthermore\, orbital histories of individual satellites 
 based on the PM results will provide clues to disentangle the processes th
 at have contributed to the quenching of star formation and help connect so
 me satellite galaxies to M31 substructures. In this contribution\, I will 
 present the progress of our HST and JWST programs to measure PMs of M31 sa
 tellite galaxies.\n\nhttps://meetings.aip.de/event/20/contributions/172/
LOCATION:Haus H\, Telegrafenberg
URL:https://meetings.aip.de/event/20/contributions/172/
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