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Related papers: Characterizing low contrast Galactic open clusters…

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We present the dynamical evolution of ten open clusters which were part of our previous studies. These clusters include both young and intermediate-age open clusters with ages ranging from 25$\pm$19 Myr to 1.78$\pm$0.20 Gyr. The total mass…

Astrophysics of Galaxies · Physics 2023-07-19 Jayanand Maurya , Y. C. Joshi , Manash Ranjan Samal , Vineet Rawat , Anubha Singh Gour

In Gaia DR2, the unprecedented high-precision level reached in sub-mas for astrometry and mmag for photometry. Using cluster members identified with these astrometry and photometry in Gaia DR2, we can obtain a reliable determination of…

Astrophysics of Galaxies · Physics 2020-09-02 Jing Zhong , Li Chen , Di Wu , Lu Li , Leya Bai , Jinliang Hou

Context. Open clusters (OCs) are valuable probes of stellar population characteristics. Their age and metallicity provide insights into the chemical enrichment history of the Milky Way. By studying the metallicity of OCs, we can explore the…

The stellar content of Galactic open clusters is gradually depleted during their evolution as a result of internal relaxation and external interactions. The final residues of the evolution of open clusters are called open cluster remnants,…

Solar and Stellar Astrophysics · Physics 2019-04-03 M. S. Angelo , J. F. C. Santos , W. J. B. Corradi , F. F. S. Maia

In this work we explore the new catalog of galactic open clusters that became available recently, containing 1750 clusters that have been re-analysed using the Gaia DR2 catalog to determine the stellar memberships. We used the young open…

Astrophysics of Galaxies · Physics 2021-04-02 H. Monteiro , D. A. Barros , W. S. Dias , J. R. D. Lépine

Open clusters (OCs) usually evolve gradually as the number of their members changes, which can be manifested in their morphological characteristics. We aim to investigate the morphological stability of 1,490 OCs and further explore the…

Astrophysics of Galaxies · Physics 2026-04-15 Yuting Li , Qingshun Hu , Yufei Cai , Yu Dai , Mingfeng Qin , Yangping Luo

Using the Bayesian Analysis of Stellar Evolution-9 (BASE-9) code and Gaia DR3, Pan-STARRS, and 2MASS data, we identify photometric binaries in 35 open clusters (OCs) and constrain their masses. We find a strong correlation between the…

Solar and Stellar Astrophysics · Physics 2025-06-27 Anna C. Childs , Aaron M. Geller

Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies. The second Gaia data release contains precise astrometry at the sub-milliarcsecond level and…

Context. Open clusters are very good tracers of the evolution of the Galactic disc. Thanks to Gaia, their kinematics can be investigated with an unprecedented precision and accuracy. Aims. The distribution of open clusters in the 6D phase…

The physical nature of a series of 20 new open clusters is confirmed employing existing data on putative star members, mainly from second Gaia Data Release (DR2). The clusters were discovered as overdensities of stars by visual inspection…

Solar and Stellar Astrophysics · Physics 2021-06-23 Juan Casado

We establish the nature and derive fundamental and structural parameters of the recently catalogued objects FSR1744, FSR89 and FSR31. This work intends to provide clues to constrain the Galactic tidal disruption efficiency, improve…

Astrophysics · Physics 2009-11-13 Charles Bonatto , Eduardo Bica

Context. Since the first publication of the Gaia catalogue a new view of our Galaxy has arrived. Its astrometric and photometric information has improved the precision of the physical parameters of open star clusters obtained from them.…

Astrophysics of Galaxies · Physics 2024-08-28 Jeison Alfonso , Alejandro García-Varela , Katherine Vieira

Open clusters (OCs) are recognised as excellent tracers of Galactic thin-disc properties. At variance with intermediate-age and old OCs, for which a significant number of studies is now available, clusters younger than 150 Myr have been…

We have collected high-dispersion echelle spectra of red giant members in the twelve open clusters (OCs) and derived stellar parameters and chemical abundances for 26 species by either line equivalent widths or synthetic spectrum analyses.…

Astrophysics of Galaxies · Physics 2016-09-21 Arumalla B. S. Reddy , David L. Lambert , Sunetra Giridhar

With the release of Gaia data, the number of known Galactic open clusters (OCs) has increased rapidly, providing an excellent opportunity to confirm more binary open clusters in the Milky Way. Using a recently released OC catalogue, we…

Astrophysics of Galaxies · Physics 2025-08-28 Zhongmu Li , Zhanpeng Zhu

In this work, we analysed young stellar clusters with spatial and kinematic coherence in the Orion star-forming complex. For this study, we selected a sample of pre-main sequence candidates using parallaxes, proper motions and positions on…

The Galactic globular cluster system is incomplete, especially in the low latitude regions of the Galactic bulge and disk. We report the physical characterization of twelve star clusters in the Milky Way, most of which are explored here for…

The distribution of young stars into OB associations has long been in need of updating. High-precision {\sl Gaia} early Data Release 3 astrometry, coupled with modern machine-learning methods, allows this to be done. We have compiled a…

Astrophysics of Galaxies · Physics 2022-07-06 Alexander A. Chemel , Richard de Grijs , Elena V. Glushkova , Andrey K. Dambis

We derive photometric, structural and dynamical evolution-related parameters of five as yet unstudied low-contrast open clusters located in the third quadrant using 2MASS data. The target clusters are Czernik 31, Czernik 32, Haffner 9,…

Astrophysics · Physics 2007-05-23 E. Bica C. Bonatto

We investigate the dynamical evolution of 40 open clusters (OCs) by means of their astrophysical parameters derived from field-decontaminated 2MASS photometry. We find a bifurcation in the planes core radius vs. age and cluster radius vs.…

Astrophysics of Galaxies · Physics 2017-10-04 Orhan Güneş , Yüksel Karataş , Charles Bonatto