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

Massive triples on the edge of stability

P1
19 Aug 2024, 16:30
2m
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

Caspar William Bruenech (University of Amsterdam)

Description

Star systems containing three stars are common in the universe, with the triple fraction increasing with the mass of the star. Approximately 10% of solar-type stars reside in triples, while this fraction goes up to 60% for 10 stars of 10 solar masses. To fully understand the evolution of massive stars, triple evolution should be taken into account. One of the evolutionary pathways for triples is dynamical instability, in which stellar winds or mass transfer can destabilize the orbits, resulting in disintegration of the triple. In this talk I will present the results of n-body simulations of massive, unstable triples. I will show how these systems can produce collisions between massive stars, or high-velocity massive runaways. I will present the estimated rates for these events, and discuss it in the context of potential observational counterparts.

Affliation Anton Pannekoek Institute for Astronomy, University of Amsterdam
Current Position PhD Student

Primary author

Caspar William Bruenech (University of Amsterdam)

Co-authors

Floris Kummer (University of Amsterdam) Dr Silvia Toonen (University of Amsterdam) Dr Tjarda Boekholt

Presentation materials