19–23 Aug 2024
Nicolaus Copernicus Astronomical Center, Warsaw, Poland
Europe/Warsaw timezone

The dynamics of planet-like objects in star clusters

P5
20 Aug 2024, 17:05
20m
Main Lecture Hall (Nicolaus Copernicus Astronomical Center, Warsaw, Poland)

Main Lecture Hall

Nicolaus Copernicus Astronomical Center, Warsaw, Poland

Bartycka 18, 00-716 Warsaw Poland

Speaker

Francesco Maria Flammini Dotti (University of Heidelberg)

Description

The dynamical evolution of planet-like objects in star clusters is not easy observable in star clusters, and it still not possible in dense star clusters such as globular clusters. I will first introduce previous works that looked into the motion of these objects, and then I will numerically explore the dynamical evolution of such objects, varying the number density of the hosting star cluster. As a final point, I will try to confute if the relative large abundance of free-floating planets in our galaxy is due to their ejected free-floating planets. I will use NBODY6++GPU-ML (a N-body code which performs simulations with a large number of particles and massless particles, i.e., star clusters with free-floating planets). The results pinpoint how the planet-like objects are not particularly affected by mass segregation, but only by the central gravitational evolution of the core of the star cluster, suggesting that those particles, in relatively dense star clusters, are ejected only at much larger timescales.

Affliation University of Heidelberg
Current Position Postdoc

Primary author

Francesco Maria Flammini Dotti (University of Heidelberg)

Co-authors

Prof. M.B.N. Kouwenhoven (Xi'an Jiaotong-Liverpool University) Prof. Rainer Spurzem (University of Heidelberg)

Presentation materials