Spectral analysis of stellar orbits in a tidally induced bar

TL;DR

This study uses spectral analysis to investigate the orbital structure of a tidally induced bar in a dwarf galaxy, revealing that most stars follow box orbits rather than classical x1 orbits.

Contribution

It provides new insights into the orbital composition of tidally formed bars using numerical spectral analysis techniques.

Findings

Only about 10% of stars have x1-like frequencies.

Most stars follow box orbits parallel to the bar.

Orbital structure differs from classical barred galaxy models.

Abstract

Using numerical analysis of fundamental frequencies we study the orbital structure of a tidally induced bar formed in a simulated dwarf galaxy orbiting a Milky Way-like host. We find that only about 10% of stars have frequencies compatible with x1 orbits, the classical periodic orbits in a barred potential. The rest of the stars follows box orbits parallel to the bar, with varying degree of elongation.