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Context. The scale height of the spatial distribution of open clusters (OCs) in the Milky Way exhibits a well known increase with age which is usually interpreted as evidence for dynamical heating of the disc or of the disc having been…

Astrophysics of Galaxies · Physics 2025-02-05 Sandro Moreira , André Moitinho , André Silva , Duarte Almeida

We present a systematic investigation of 1,481 Galactic open clusters (OCs) through the application of the Limepy dynamical model, from which we derive the fundamental structural parameters of OCs. We conduct the statistical analyses on the…

Astrophysics of Galaxies · Physics 2025-12-11 Jin-Sheng Qiu , Zhen Wan , Xu-Zhi Li , Qing-Feng Zhu , Lu-lu Fan , Xiao-Hui Xu , Jun-Han Zhao , Zhi-Yong Pu

During their dynamical evolution, Galactic open clusters (OCs) gradually lose their stellar content mainly because of internal relaxation and tidal forces. In this context, the study of dynamically evolved OCs is necessary to properly…

Astrophysics of Galaxies · Physics 2018-04-13 M. S. Angelo , A. E. Piatti , W. S. Dias , F. F. S. Maia

A number of stellar open cluster (OC) pairs in the Milky Way occupy similar positions in the phase space (coordinates, parallax and proper motions) and therefore may constitute physically interacting systems. The characterization of such…

Astrophysics of Galaxies · Physics 2022-01-12 M. S. Angelo , J. F. C. Santos , F. F. S. Maia , W. J. B. Corradi

We use hydrodynamic cosmological zoom-in simulations from the FIRE project to explore the morphologies and kinematics of fifteen Milky Way (MW)-mass galaxies. Our sample ranges from compact, bulge-dominated systems with 90% of their stellar…

The current generation of galaxy simulations can resolve individual giant molecular clouds, the progenitors of dense star clusters. But the evolutionary fate of these young massive clusters, and whether they can become the old globular…

For several decades now, open clusters have been used to study the structure and chemical evolution of the disk of our Galaxy. Due to the fact that their ages and metallicities can be determined with relatively good precision, and since…

Astrophysics · Physics 2007-05-23 T. E. Tecce , L. J. Pellizza , A. E. Piatti

Open star clusters are the essential building blocks of the Galactic disk; "strong chemical tagging" - the premise that all star clusters can be reconstructed given chemistry information alone - is a driving force behind many current and…

Open Clusters (OCs) can trace with a great accuracy the evolution of the Galactic disk. The aim of this work is to study the kinematical behavior of the OC population over time. We take advantage of the latest age determinations of OCs to…

By utilising Gaia EDR3 photometric / astrometric data, we studied the dynamical evolution from the obtained astrophysical, structural and dynamical parameters of the open clusters (OCs), Berkeley 10 (Be 10), Berkeley 81 (Be 81), Berkeley 89…

Astrophysics of Galaxies · Physics 2022-05-04 Hikmet Çakmak , Yüksel Karataş

The Galactic population of open clusters provides an insight into star formation in the Galaxy. The open cluster catalogue by Dias et al.(2002b) is a rich source of data, including kinematic information. This large sample made it possible…

Astrophysics of Galaxies · Physics 2015-05-14 D. Vande Putte , T. P. Garnier , Ignacio Ferreras , R. P. Mignani , Mark Cropper

We present a BVI photometric study of four old open clusters (OCs) in the Milky Way Galaxy, Czernik 30, Berkeley 34, Berkeley 75, and Berkeley 76 using the observation data obtained with the SMARTS 1.0 m telescope at the CTIO, Chile. These…

Astrophysics of Galaxies · Physics 2023-01-25 Hyobin Im , Sang Chul Kim , Jaemann Kyeong , Hong Soo Park , Joon Hyeop Lee

The orbits of satellite galaxies encode rich information about their histories. We investigate the orbital dynamics and histories of satellite galaxies around Milky Way (MW)-mass host galaxies using the FIRE-2 cosmological simulations,…

Astrophysics of Galaxies · Physics 2022-12-07 Isaiah B. Santistevan , Andrew Wetzel , Erik Tollerud , Robyn E. Sanderson , Jenna Samuel

Open clusters offer crucial insights into stellar nucleosynthesis and the chemical evolution of the Galactic disc, as their ages and distances can be determined with higher accuracy compared to field stars. In this study, we investigate the…

Astrophysics of Galaxies · Physics 2025-07-16 J. Carbajo-Hijarrubia , R. Carrera , F. Anders , C. Jordi , L. Casamiquela , L. Balaguer-Núñez , A. Gil de Paz

We investigate the structural and dynamical properties of Open Clusters (OCs) classified as single, in pairs, or in groups. By analysing their mass, size, age, fractality, and mass segregation, we aim to identify systematic differences…

Astrophysics of Galaxies · Physics 2025-07-02 Valeria Coenda , Gustavo Baume , Tali Palma , Carlos Feinstein

The mismatch between the mass function of the Milky Way's embedded clusters (ECs) and that of open clusters (OCs) raises the question of whether each OC originates from a single EC. In this work, we explore a scenario in which OCs form as a…

Astrophysics of Galaxies · Physics 2025-01-16 J. W. Zhou , Sami Dib , Pavel Kroupa

We use the open clusters (OCs) with known parameters available in the WEBDA database and in recently published papers to derive properties related to the disk structure. The sample totals 654 OCs, consisting basically of Trumpler types I to…

Astrophysics · Physics 2009-11-11 C. Bonatto , L. O. Kerber , E. Bica , B. X. Santiago

Open clusters (OCs) in the Galaxy are excellent probes for tracing the structure and evolution of the Galactic disk. We present an updated catalog of parameters for 1,145 OCs, estimated using the Gaia DR3 data earlier listed in…

Astrophysics of Galaxies · Physics 2025-03-12 Geeta Rangwal , Aman Arya , Annapurni Subramaniam , Kulinder Pal Singh , Xiaowei Liu

The structure of spiral galaxies is essential to understanding the dynamics and evolution of disk galaxies; however, the precise nature of spiral arms remains uncertain. Two challenges in understanding the mechanisms driving spirals are how…

Context. The inner disc, linking the thin disc with the bulge, has been somehow neglected in the past because of intrinsic difficulties in its study, due, e.g., to crowding and high extinction. Open clusters located in the inner disc are…

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