Analyzing the 3D morphology and kinematics of open clusters located within 500 pc of the Sun

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Astrophysics of Galaxies

Solar and Stellar Astrophysics

Analyzing the 3D morphology and kinematics of open clusters located within 500 pc of the Sun

3D Morphology of Open Clusters in the Solar Neighborhood with Gaia EDR3: its Relation to Cluster Dynamics

We analyze the 3d morphology and kinematics of 13 open clusters (ocs) located within 500 pc of the sun, using the unsupervised machine learning method stargo and kinematic data from literature.

We determine the 3d morphology of the ocs in our sample and fit the spatial distribution of stars within the tidal radius in each cluster with an ellipsoid model.

Models of rapid gas expulsion are consistent with clusters more massive than while clusters less massive than tend to agree with adiabatic gas expulsionmodels.

Authors

Xiaoying Pang, Yuqian Li, Zeqiu Yu, Shih-Yun Tang, František Dinnbier, Pavel Kroupa, Mario Pasquato, M.B.N. Kouwenhoven

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