Analysis of a Septuple Open Cluster System and Its Extended Family in Gaia DR3
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866913061703516160 |
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| author | Husain, Muhammad Akmal Ferdinand Arifyanto, Mochamad Ikbal Hakim, Muhammad Irfan |
| author_facet | Husain, Muhammad Akmal Ferdinand Arifyanto, Mochamad Ikbal Hakim, Muhammad Irfan |
| contents | A rare multiple open cluster system has been analyzed using Gaia DR3 astrometry and photometry data. Using Agglomerative Hierarchical clustering and Bayesian-HDBSCAN, we identify a compact core consisting of seven known open clusters and two additional components, including a new candidate, forming a nine-member association. Membership probabilities are refined through statistical modeling, combining GUMM, Bayesian-KDE, and Bayesian-XDGMM for tidal tails identification. Backward orbital integrations confirm coherent motions over 20-30 million years, suggesting a common origin from the same massive molecular cloud. This system offers a unique laboratory for investigating cluster multiplicity, dynamical evolution, and Galactic structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_23093 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Analysis of a Septuple Open Cluster System and Its Extended Family in Gaia DR3 Husain, Muhammad Akmal Ferdinand Arifyanto, Mochamad Ikbal Hakim, Muhammad Irfan Astrophysics of Galaxies 85A05 (Primary) 85A35 (Secondary) J.2 A rare multiple open cluster system has been analyzed using Gaia DR3 astrometry and photometry data. Using Agglomerative Hierarchical clustering and Bayesian-HDBSCAN, we identify a compact core consisting of seven known open clusters and two additional components, including a new candidate, forming a nine-member association. Membership probabilities are refined through statistical modeling, combining GUMM, Bayesian-KDE, and Bayesian-XDGMM for tidal tails identification. Backward orbital integrations confirm coherent motions over 20-30 million years, suggesting a common origin from the same massive molecular cloud. This system offers a unique laboratory for investigating cluster multiplicity, dynamical evolution, and Galactic structure. |
| title | Analysis of a Septuple Open Cluster System and Its Extended Family in Gaia DR3 |
| topic | Astrophysics of Galaxies 85A05 (Primary) 85A35 (Secondary) J.2 |
| url | https://arxiv.org/abs/2604.23093 |