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Open clusters are unique tracers of the history of our own Galaxy's disk. According to our membership analysis based on \textit{Gaia} astrometry, out of the 226 potential clusters falling in the footprint of GALAH or APOGEE, we find that…

We have begun a survey of the chemical and dynamical properties of the Milky Way disk as traced by open star clusters. In this first contribution, the general goals of our survey are outlined and the strengths and limitations of using star…

Astrophysics · Physics 2009-11-13 Peter M. Frinchaboy , Steven R. Majewski

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

Galactic discs are known to have exponential radial profiles in luminosity and stellar surface density in their bright inner regions. Nonetheless, their faint outer regions often display a break, with either a down-bending or an up-bending…

Astrophysics of Galaxies · Physics 2025-09-24 M. Mondelin , F. Bournaud , J-C. Cuillandre , P. Hennebelle

We quantify to what extent tidal erosion of globular clusters (GCs) has contributed to the observed u-shaped relation between GC specific frequencies S_N and host galaxy luminosity M_V. We used our MUESLI code to calculate GC survival rates…

Astrophysics of Galaxies · Physics 2014-05-12 Steffen Mieske , Andreas Kuepper , Michael Brockamp

Tidal features from galaxy mergers, particularly stellar streams, offer valuable insights into galaxy assembly and dark matter halo properties. This paper aims to identify a large sample of nearby stellar streams suitable for detailed…

After their birth a significant fraction of all stars pass through the tidal threshold (prah) of their cluster of origin into the classical tidal tails. The asymmetry between the number of stars in the leading and trailing tails tests…

We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby galaxies and about seven hundred distant ones. The distant…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Y. H. Mohamed , V. P. Reshetnikov , N. Ya. Sotnikova

We present direct $N$-body simulations of tidally filling 30,000 ${\rm M}_\odot$ star clusters orbiting between 10 kpc and 100 kpc in galaxies with a range of dark matter substructure properties. The time-dependent tidal force is determined…

Astrophysics of Galaxies · Physics 2019-08-21 Jeremy J. Webb , Jo Bovy , Raymond G. Carlberg , Mark Gieles

Understanding the exact extent and content of tidal tails of open clusters provide useful clues on how field stars populate the Milky Way. We reanalyse, using Gaia EDR3 data, the tails around the open cluster NGC 752. Compared to previous…

Astrophysics of Galaxies · Physics 2022-06-22 Henri M. J. Boffin , Tereza Jerabkova , Giacomo Beccari , Long Wang

The study of their morphological coherence allows us to obtain a better understanding of the morphological evolution of open clusters. We employed the ellipsoid fitting method to delineate the 3D spatial structure of the sample clusters…

Astrophysics of Galaxies · Physics 2024-07-24 Qingshun Hu , Yu Zhang , Songmei Qin , Jing Zhong , Li Chen , Yangping Luo

Open clusters are key coeval structures that help us understand star formation, stellar evolution and trace the physical properties of our Galaxy. In the past years, the isolation of open clusters from the field has been heavily alleviated…

The dynamical evolution of stellar clusters is driven to a large extent by their environment. Several studies so far have considered the effect of tidal fields and their variations, such as, e.g., from giant molecular clouds, galactic…

Astrophysics of Galaxies · Physics 2015-05-30 I. Berentzen , E. Athanassoula

The globular clusters of large spiral galaxies can be divided into two populations: one which formed in-situ and one which comprises clusters tidally stripped away from other galaxies. In this paper we investigate the contribution to the…

Astrophysics of Galaxies · Physics 2019-03-20 Eric P. Andersson , Melvyn B. Davies

Globular clusters (GCs), the oldest stellar systems observed in the Milky Way, have for long been considered single stellar populations. As such, they provided an ideal laboratory to understand stellar dynamics and primordial star formation…

Astrophysics of Galaxies · Physics 2019-02-06 Alessandra Mastrobuono-Battisti , Sergey Khoperskov , Paola Di Matteo , Misha Haywood

Based on the most complete sample of Galactic open star clusters up to 1.8 kpc, we performed statistical analysis of the distribution of open cluster parameters in order to understand the Galactic structure. The geometrical characteristics…

Astrophysics of Galaxies · Physics 2017-07-31 Yogesh C. Joshi

The publication of the Gaia Data Release 2 (Gaia DR2) opens a new era in Astronomy. It includes precise astrometric data (positions, proper motions and parallaxes) for more than $1.3$ billion sources, mostly stars. To analyse such a vast…

Astrophysics of Galaxies · Physics 2018-10-17 A. Castro-Ginard , C. Jordi , X. Luri , F. Julbe , M. Morvan , L. Balaguer-Núñez , T. Cantat-Gaudin

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

We present N-body simulations of globular clusters, in orbits around the Galaxy, in order to study quantitatively and geometrically the tidal effects they encounter. The clusters are modelised with multi-mass King-Michie models (Michie…

Astrophysics · Physics 2010-03-01 F. Combes , S. Leon , G. Meylan

An earlier analysis of the Milky Way Star Cluster (MWSC) catalogue revealed an apparent lack of old (> 1 Gyr) open clusters in the solar neighbourhood (< 1 kpc). To fill this gap we undertook a search for hitherto unknown star clusters,…

Astrophysics of Galaxies · Physics 2014-09-05 S. Schmeja , N. V. Kharchenko , A. E. Piskunov , S. Röser , E. Schilbach , D. Froebrich , R. -D. Scholz