Multi-planet systems explored: the case of the HD34445 system revisited

Nikolaos Georgakarakos; Ian Dobbs-Dixon

doi:10.1017/S1743921323004805

Multi-planet systems explored: the case of the HD34445 system revisited

Nikolaos Georgakarakos, Ian Dobbs-Dixon

Research output: Contribution to journal › Article › peer-review

Abstract

HD34445 is a system that consists of a star and six planets. In some previous work, we investigated the dynamical stability of the system by means of numerical simulations. Here, we explore the system further by carrying out additional numerical experiments. A total of 100000 simulations confirm previous findings of the stability status of the system at the 1s and 99% c.i. level. We find that only 2.7% of the systems with parameters varied within 1s from the mean were unstable, while that percentage rose to about 28% for systems with parameter values taken within the 99% c.i. These preliminary results are presented and discussed herein.

Original language	English (US)
Pages (from-to)	101-102
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	18
Issue number	S382
DOIs	https://doi.org/10.1017/S1743921323004805
State	Published - Dec 16 2022

Keywords

celestial mechanics
chaos
methods: numerical
planets and satellites: dynamical evolution and stability
techniques: radial velocities

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921323004805

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abstract = "HD34445 is a system that consists of a star and six planets. In some previous work, we investigated the dynamical stability of the system by means of numerical simulations. Here, we explore the system further by carrying out additional numerical experiments. A total of 100000 simulations confirm previous findings of the stability status of the system at the 1s and 99% c.i. level. We find that only 2.7% of the systems with parameters varied within 1s from the mean were unstable, while that percentage rose to about 28% for systems with parameter values taken within the 99% c.i. These preliminary results are presented and discussed herein.",

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AU - Georgakarakos, Nikolaos

AU - Dobbs-Dixon, Ian

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KW - techniques: radial velocities

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Multi-planet systems explored: the case of the HD34445 system revisited

Abstract

Keywords

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