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Related papers: Evidence for a Catastrophically Disrupted Open Clu…

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Context. The dissolution rate of open clusters (OCs) and integration of their stars into the Milky Way's field population has been previously explored using their age distribution. With the advent of the Gaia mission, we have an exceptional…

Astrophysics of Galaxies · Physics 2025-01-29 Duarte Almeida , André Moitinho , Sandro Moreira

We present results of age determination based on the standard procedure of isochrone fitting for about 600 star clusters younger than about 1.2 Gyr from the central parts of the LMC. Comparison of age distributions of star clusters from the…

Astrophysics · Physics 2007-05-23 G. Pietrzynski , A. Udalski

The age distribution of the open cluster system is a key piece of information to decipher the star formation history of the Milky Way disk. Recently, a remarkable earlier drop of its older end was found, which caught our attention.…

Astrophysics of Galaxies · Physics 2023-07-18 Andrés E. Piatti

The distribution of member stars in the surroundings of an Open Cluster (OC) can shed light on the process of its formation, evolution and dissolution. The analysis of structural parameters of OCs as a function of their age and position in…

Astrophysics of Galaxies · Physics 2022-03-14 Y. Tarricq , C. Soubiran , L. Casamiquela , A. Castro-Ginard , J. Olivares , N. Miret-Roig , P. A. B. Galli

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…

The orbit distribution of young stars in the Galactic disk is highly structured, from well-defined clusters to streams of stars that may be widely dispersed across the sky, but are compact in orbital action-angle space. The age distribution…

Astrophysics of Galaxies · Physics 2023-11-20 Verena Fürnkranz , Hans-Walter Rix , Johanna Coronado , Rhys Seeburger

We present a new absolute age determination for NGC 6791, one of the Milky Way's oldest and most metal-rich open clusters. Its unusual properties make it an important probe of inner-disk evolution and asteroseismic calibration, but its age…

Solar and Stellar Astrophysics · Physics 2026-05-22 George Dufresne , Brian Chaboyer , Rayna Rampalli

A high number of embedded clusters is found in the Galaxy. Depending on the formation scenario, most of them can evolve to unbounded groups that are dissolved within a few tens of Myr. A systematic study of young stellar clusters showing…

Astrophysics of Galaxies · Physics 2015-06-11 T. Santos-Silva , J. Gregorio-Hetem

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

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

This study provides a detailed examination of the structural, astrophysical, kinematic, and dynamical properties of the open clusters COIN-Gaia 24, Czernik 24, FSR 0893, and UBC 74, which are located in the direction opposite to the…

Astrophysics of Galaxies · Physics 2026-02-27 Selçuk Bilir , Seval Taşdemir , Ege Eraydın , Deniz Cennet Çınar , Jeison Alfonso , Remziye Canbay

We exploit the [Mg/Mn]-[Al/Fe] chemical abundance plane to help identify nearby halo stars in the 14th data release from the APOGEE survey that have been accreted on to the Milky Way. Applying a Gaussian Mixture Model, we find a `blob' of…

Astrophysics of Galaxies · Physics 2020-02-12 Payel Das , Keith Hawkins , Paula Jofre

Globular clusters (GCs) provide statistically significant coeval populations of stars spanning various evolutionary stages, allowing robust constraints on stellar evolution model parameters and ages. We analyze eight old Milky Way GCs with…

Astrophysics of Galaxies · Physics 2025-05-07 Jiaqi , Ying , Brian Chaboyer , Michael Boylan-Kolchin , Daniel Weisz , Rowan Goebel-Bain

The all-sky Milky Way Star Clusters (MWSC) survey provides uniform and precise ages and other parameters for a variety of clusters in the Solar Neighbourhood. We construct the cluster age distribution, investigate its spatial variations,…

Astrophysics of Galaxies · Physics 2018-06-13 A. E. Piskunov , A. Just , N. V. Kharchenko , P. Berczik , R. -D. Scholz , S. Reffert , S. X. Yen

The Milky Way's nuclear star cluster (NSC) is a unique laboratory to study the formation and evolution of dense stellar systems around a supermassive black hole. Previous work suggests that most stars in the NSC are old; however, the…

(abridged) A scenario for the formation of multiple co-eval populations separated in age by about 1 Myr in very young clusters (VYCs, ages less than 10 Myr) and with masses in the range 600-20000 Msun is outlined. It rests upon a converging…

Astrophysics of Galaxies · Physics 2018-05-02 Pavel Kroupa , Tereza Jerabkova , František Dinnbier , Giacomo Beccari , Zhiqiang Yan

To shed light on the time evolution of local star formation episodes in M33, we study the association between 566 Giant Molecular Clouds (GMCs), identified through the CO (J=2-1) IRAM-all-disk survey, and 630 Young Stellar Cluster…

Open Clusters are born and evolve along the Milky Way plane, on them is imprinted the history of the Galactic disc, including the chemical and dynamical evolution. Chemical and dynamical properties of open clusters can be derived from…

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…

Thanks to modern understanding of stellar evolution, we can accurately measure the age of Open Clusters (OCs). Given their position, they are ideal tracers of the Galactic disc. Gaia data release 2, besides providing precise parallaxes, led…

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