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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 a comprehensive UBVRI and Washington CT1T2 photometric analysis of seven catalogued open clusters, namely: Ruprecht 3, 9, 37, 74, 150, ESO 324-15 and 436-2. The multi-band photometric data sets in combination with 2MASS…

Astrophysics of Galaxies · Physics 2017-01-18 Andrés E. Piatti , Wilton S. Dias , Laura M. Sampedro

Stars are born within dense clumps of giant molecular clouds, constituting young stellar agglomerates known as embedded clusters, which only evolve into bound open clusters under special conditions. We statistically study all embedded…

Astrophysics of Galaxies · Physics 2015-06-17 Esteban F. E. Morales , Friedrich Wyrowski , Frederic Schuller , Karl M. Menten

(Abridged) - The combination of several mass-decreasing processes may critically affect the structure of open clusters (OCs), to the point that most dissolve into the field in a time-scale shorter than $\approx1$ Gyr. In this paper we focus…

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

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

Stars in open clusters are powerful probes of the intervening Galactic magnetic field, via background starlight polarimetry, because they provide constraints on the magnetic field distances. We use 2MASS photometric data for a sample of 31…

Solar and Stellar Astrophysics · Physics 2015-10-14 Sadia Hoq , Dan Clemens

Astrophysical parameters (\textit{age, reddening, distance, core and cluster radii}) of 14 open clusters (OCs) projected close to the Galactic plane are derived with 2MASS photometry. The OCs are Be 63, Be 84, Cz 6, Cz 7, Cz 12, Ru 141, Ru…

Astrophysics of Galaxies · Physics 2012-04-02 Denilso Camargo , Charles Bonatto , Eduardo Bica

We present results from Johnson $UBV$, Kron-Cousins $RI$ and Washington $CT_1T_2$ photometries for seven van den Bergh-Hagen (vdBH) open clusters, namely, vdBH\,1, 10, 31, 72, 87, 92, and 118. The high-quality, multi-band photometric data…

Astrophysics of Galaxies · Physics 2016-09-21 Andrés E. Piatti

The VISTA Variables in the Via L\'actea Extended Survey (VVVX) enables exploration of previously uncharted territories within the inner Milky Way (MW), particularly those obscured by stellar crowding and intense extinction. Our objective is…

Astrophysics of Galaxies · Physics 2024-09-11 Saroon S , Bruno Dias , Dante Minniti , M. C. Parisi , Matías Gómez , Javier Alonso-García

Most stars in our Galaxy form in stellar aggregates, which can become long-lived structures called open clusters (OCs). Along their dynamical evolution, their gradual depletion leave some imprints on their structure. In this work, we…

Astrophysics of Galaxies · Physics 2023-04-19 M. S. Angelo , J. F. C. Santos , F. F. S. Maia , W. J. B. Corradi

We have analyzed the kinematics of open star clusters (OSCs) with the proper motions and distances calculated by Hao et al. based on Gaia EDR3 data. The mean line-of-sight velocities are known for a number of clusters from this list. We…

Astrophysics of Galaxies · Physics 2022-03-25 V. V. Bobylev , A. T. Bajkova

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

We have performed a detailed analysis on the Teutsch 76 (T76) open cluster using the deep near-infrared (NIR) observations taken with the TANSPEC instrument mounted on the 3.6m Devasthal Optical Telescope (DOT) along with the recently…

The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) has contributed with deep multi-epoch photometry of the Galactic bulge and the adjacent part of the disk over 526 square degrees. More than a hundred cluster candidates have…

Solar and Stellar Astrophysics · Physics 2016-03-16 S. Ramírez Alegría , J. Borissova , A. -N. Chené , C. Bonatto , R. Kurtev , P. Amigo , M. Kuhn , M. Gromadzki , J. A. Carballo-Bello

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

We determine the mass functions (MFs) and the dynamical parameters of 15 nearby open clusters (OCs) using the unprecedented data set of the Gaia Early Data Release 3. We select the members of each cluster by combining the photometric…

Astrophysics of Galaxies · Physics 2022-09-21 H. Ebrahimi , A. Sollima , H. Haghi

We study the stellar cluster population in two adjacent fields in the nearby, face-on spiral galaxy, M83, using WFC3/HST imaging. The clusters are selected through visual inspection to be centrally concentrated, symmetric, and resolved on…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 N. Bastian , A. Adamo , M. Gieles , E. Silva Villa , H. J. G. L. M Lamers , S. S. Larsen , L. J. Smith , I. S. Konstantopoulos , E. Zackrisson

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

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

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
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