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The kinematic Structure of the LMC As Measured by its Field Stars and Star Clusters

Published online by Cambridge University Press:  30 October 2025

Florian Niederhofer Open the ORCID record for Florian Niederhofer [Opens in a new window]  and
Maria-Rosa Cioni
Florian Niederhofer*
Affiliation:
Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
Maria-Rosa Cioni
Affiliation:
Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
*
email: fniederhofer@aip.de
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Abstract

In this contribution, we present the results from proper motion measurements across the Large Magellanic Cloud (LMC) using data from the VISTA survey of the Magellanic Cloud system (VMC). Using the derived proper motions, we modelled the structure of the LMC and analysed its internal kinematics. Within the central parts of the LMC, we found observational evidence for elongated orbits parallel to the bar’s major axis, which are considered to provide the main contribution for the support of a bar structure. A peculiar kinematic structure in the outer regions of the LMC hints toward stripped material from the Small Magellanic Cloud. We further introduce an observational campaign utilising the Hubble Space Telescope to precisely measure the proper motions of star clusters within the LMC. These motions, combined with radial velocities and 3D positions will be used to trace the gravitational potential of the LMC.

Keywords

surveysproper motionstars: kinematics and dynamicsglobular clustersgalaxies: individual: LMCMagellanic Clouds

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S379: Dynamical Masses of Local Group Galaxies , December 2023 , pp. 278 - 284
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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