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Related papers: Study of 26 Galactic open clusters with extended m…

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The Magellanic Clouds host a large population of massive (> 10^4 Msun) star clusters with ages ranging from a few Myr to 12 Gyr. In nearly all cases, close inspection of their CMDs reveals features that deviate from expectations of a…

Astrophysics of Galaxies · Physics 2017-11-06 I. Cabrera-Ziri , S. Martocchia , K. Hollyhead , N. Bastian

The study of young massive clusters can provide key information for the formation of globular clusters, as they are often considered analogues. A currently unanswered question in this field is how long these massive clusters remain embedded…

Astrophysics of Galaxies · Physics 2015-06-23 Katherine Hollyhead , Nate Bastian , Angela Adamo , Esteban Silva-Villa , Jim Dale , Jenna Ryon , Zack Gazak

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

We present colour-magnitude diagrams (CMDs) for a sample of seven young massive clusters in the galaxies NGC 1313, NGC 1569, NGC 1705, NGC 5236 and NGC 7793. The clusters have ages in the range 5-50 million years and masses of 10^5 -10^6…

Astrophysics of Galaxies · Physics 2015-05-28 S. S. Larsen , S. E. de Mink , J. J. Eldridge , N. Langer , N. Bastian , A. Seth , L. J. Smith , J. Brodie , Y. N. Efremov

Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and their evolutionary state. 207 open star clusters were observed using slitless spectroscopy method and 157 emission…

Astrophysics · Physics 2009-11-13 Blesson Mathew , Annapurni Subramaniam , Bhuwan Chandra Bhatt

Open clusters potentially provide an ideal environment for the search for transiting extrasolar planets since they feature a relatively large number of stars of the same known age and metallicity at the same distance. With this motivation,…

Astrophysics · Physics 2009-11-10 K. von Braun , B. L. Lee , S. Seager , H. K. C. Yee , G. Mallen-Ornelas , M. D. Gladders

We present a detailed study of stellar rotation in the massive 1.5 Gyr old cluster NGC 1846 in the Large Magellanic Cloud. Similar to other clusters at this age, NGC 1846 shows an extended main sequence turn-off (eMSTO), and previous…

A significant number of intermediate age clusters (1-2 Gyr) in the Magellanic Clouds appear to have multiple stellar populations within them, derived from bi-modal or extended main sequence turn offs. If this is interpreted as an age…

Astrophysics of Galaxies · Physics 2015-05-13 Nate Bastian , Selma de Mink

Obtain time-series photometry of the very crowded central regions of Galactic globular clusters with better angular resolution than previously achieved with conventional CCDs on ground-based telescopes to complete, or improve, the census of…

An open supercluster (OSC) is defined as a cluster of at least six open clusters (OCs) born from the same giant molecular cloud (GMC). We survey the recent catalogs of OCs based on Gaia data and relevant literature to find 17 OSCs of the…

Astrophysics of Galaxies · Physics 2024-06-26 Juan Casado , Yasser Hendy

In this fourth paper of a series on the precision of ages of stellar populations obtained through the full-spectrum fitting technique, we present a first systematic analysis that compare the age, metallicity and reddening of star clusters…

Astrophysics of Galaxies · Physics 2022-03-21 Randa Asa'd , Paul Goudfrooij , A. M. As'ad

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

As groups of coeval stars born from the same molecular cloud, an Open cluster (OC) is an ideal laboratory for studying the structure and dynamical evolution of the Milky Way. The release of High-Precision Gaia Early Data Release 3 (Gaia…

Astrophysics of Galaxies · Physics 2023-05-31 Huanbin Chi , Feng Wang , Zhongmu Li

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

We present a spectroscopic analysis of main sequence (MS) stars in the young globular cluster NGC1818 (age~40 Myrs) in the Large Magellanic Cloud. Our photometric survey on Magellanic Clouds clusters has revealed that NGC1818, similarly to…

Solar and Stellar Astrophysics · Physics 2018-08-29 A. F. Marino , N. Przybilla , A. P. Milone , G. Da Costa , F. D'Antona , A. Dotter , A. Dupree

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…

Galactic open clusters (OCs) are subject to internal and external destructive effects that gradually deplete their stellar content, leaving imprints on their structure. To investigate their dynamical state from an observational perspective,…

Astrophysics of Galaxies · Physics 2025-04-10 M. S. Angelo , J. F. C. Santos , W. J. B. Corradi , F. F. S. Maia

Extended stellar clusters with effective radii larger than 10 pc have been found in various environments. Objects with masses comparable to globular clusters (GCs) are called extended clusters (ECs), while objects with masses in the dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 R. C. Bruens , P. Kroupa

Molecular clouds at very high latitudes ($b > 60^o$) away from the Galactic plane are considered rare and not conventional sites of star formation. Contrary to this, the recent discovery of high latitude embedded Clusters can possibly…

Astrophysics of Galaxies · Physics 2018-02-21 Priya Hasan

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