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arXiv · 2201.12040

Dynamical evolution modeling of the Collinder 135 & UBC 7 binary star cluster

Marina Ishchenko·Peter Berczik·Nina Kharchenko
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Abstract

The purpose of the present work is a detailed investigation of the dynamical evolutionof Collinder 135 and UBC 7 star clusters. We present a set of dynamical numerical simulationsusing realistic star clusterN-body modeling technique with the forward integration of thestar-by-star cluster models to the present day, based on best-available 3D coordinates and velocitiesobtained from the latest Gaia EDR3 data release. We have established that Collinder 135 and UBC 7 are probably a binary star cluster and have common origin. We carried out a full star-by-star N-body simulation of the stellar population of both clusters using the new algorithm of Single Stellar Evolution and performed a comparison of the results obtained in the observational data (like cumulative number counts), which showed a fairly good agreement.

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Marina Ishchenko, Peter Berczik, Nina Kharchenko. 2023-01-31. Dynamical evolution modeling of the Collinder 135 & UBC 7 binary star cluster. https://doi.org/10.1017/s1743921322001661

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