Orbits of LMC/SMC with recent ground-based proper motions

TL;DR

This paper reanalyzes the orbital history of the Magellanic Clouds using recent proper motion data, considering updated Galactic parameters to explore uncertainties in their possible orbits.

Contribution

It provides a partial examination of orbital parameter space accounting for recent measurements and updated Galactic constants, highlighting the significance of binding scenarios.

Findings

None of the binding scenarios can be neglected under the studied setup.

Updated proper motions influence the orbital history interpretations.

Uncertainties in Galactic parameters affect the orbital dynamics of the Clouds.

Abstract

In recent years, with new ground-based and HST measurements of proper motions of the Magellanic Clouds being published, a need of a reanalysis of possible orbital history has arisen. As complementary to other studies, we present a partial examination of the parameter space -- aimed at exploring the uncertainties in the proper motions of both Clouds, taking into account the updated values of Galactic constants and Solar motion, which kinematically and dynamically influence the orbits of the satellites. In the chosen setup of the study, none of the binding scenarios of this pair could be neglected.