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SUMMARY:By Jove\, what a crowd: on the prevalence of hot Jupiters in M67 -
  Mika Kontiainen (IoA Cambridge)
DTSTART:20260326T123000Z
DTEND:20260326T133000Z
UID:TALK244816@talks.cam.ac.uk
CONTACT:Mika Kontiainen
DESCRIPTION:Given their likely origin far from their present-day orbits\, 
 hot Jupiters (giant planets with orbital periods less than 10 days) presen
 t a powerful probe of the dynamical processing planets undergo following t
 heir formation. The reported excess of hot Jupiters in the old (4 Gyr) ope
 n cluster M67 compared to the Galactic field raises the question of the ex
 tent to which interactions in crowded cluster environments contribute to t
 his processing. In particular\, it has been suggested that close encounter
 s with nearby stars may trigger high-eccentricity migration\, thereby lead
 ing to enhanced hot Jupiter formation in dense environments. In this talk\
 , I will present an efficient hybrid approach for modelling the secular an
 d tidal evolution of planetary systems under the influence of stochastic p
 erturbations from passing stars in an evolving cluster environment using a
  combination of analytic and numerical methods. I will discuss an applicat
 ion of the model to M67 and share some preliminary results linking the obs
 erved demographics to the primordial population of Jovian planets in the c
 luster.
LOCATION:Institute of Astronomy 
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