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SUMMARY:What can we learn from wide binaries? - Cathie Clarke (IoA Cambrid
 ge)
DTSTART:20250828T113000Z
DTEND:20250828T123000Z
UID:TALK235003@talks.cam.ac.uk
CONTACT:Mor Rozner
DESCRIPTION:Despite their rarity\, (ultra-) wide binaries command consider
 able interest\, both in terms of their origin and survival and on account 
 of what they tell us about gravity in the ultra-low field limit. In additi
 on\, through assuming that their components are coeval and chemically homo
 geneous at birth\, chemical anomalies can be used to probe differential ac
 cretion of planetary material.  Here I will discuss the main theories for
  wide binary formation (whether they form through orbital reconfiguration 
 within small N clusters or whether they result from capture in the context
  of large N dissolving clusters)\, emphasising what observations can poten
 tially constrain the dominant formation channel. Finally I describe the re
 cent rise and fall of the idea that wide binaries prove the correctness of
  MOND.
LOCATION:Institute of Astronomy 
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