Asymmetrical tidal tails of open star clusters: stars crossing their cluster's prah challenge Newtonian gravitation [PDF]
, 2022 After their birth a significant fraction of all stars pass through the tidal threshold (práh) of their cluster of origin into the classical tidal tails. The asymmetry between the number of stars in the leading and trailing tails tests gravitational theory.
P. Kroupa +16 more
semanticscholar +1 more source
Hunting for Neighboring Open Clusters with Gaia DR3: 101 New Open Clusters within 500 pc
The Astrophysical Journal Supplement Series, 2023 We systematically searched for open clusters in the solar neighborhood within 500 pc using the pyUPMASK and HDBSCAN clustering algorithms based on Gaia DR3.
Songmei Qin +3 more
doaj +1 more source
Unveiling Hidden Stellar Aggregates in the Milky Way: 1656 New Star Clusters Found in Gaia EDR3
The Astrophysical Journal Supplement Series, 2022 We report 1656 new star clusters found in the Galactic disk (∣ b ∣ < 20°) beyond 1.2 kpc, using Gaia EDR3 data. Based on an unsupervised machine-learning algorithm, DBSCAN, and following our previous studies, we utilized a unique method to do the data ...
Zhihong He +4 more
doaj +1 more source
Global survey of star clusters in the Milky Way. VII. Tidal parameters and mass function [PDF]
Astronomy & Astrophysics, 2023 We built Galactic open star cluster mass functions (CMFs) for different age sub-samples in the wider solar neighbourhood. We present a simple cluster formation and evolution model to reproduce the main features of the CMFs.
A. Just +4 more
semanticscholar +1 more source
The Astrophysical Journal Supplement Series, 2023 Studying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude ...
Huanbin Chi +4 more
doaj +1 more source
3D Morphology of Open Clusters in the Solar Neighborhood with Gaia EDR 3. II. Hierarchical Star Formation Revealed by Spatial and Kinematic Substructures [PDF]
Astrophysical Journal, 2022 We identify members of 65 open clusters in the solar neighborhood using the machine-learning algorithm StarGO based on Gaia EDR3 data. After adding members of 20 clusters from previous studies we obtain 85 clusters, and study their morphology and ...
X. Pang +26 more
semanticscholar +1 more source
Kinematic Properties of Open Star Clusters with Data from the Gaia DR2 Catalogue [PDF]
Astronomy letters, 2019 We consider open star clusters (OSCs) with the proper motions, parallaxes, and line-of-sight velocities calculated by various authors from Gaia DR2 data.
V. Bobylev, A. Bajkova
semanticscholar +1 more source
Multiple Populations in Star Clusters [PDF]
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
A. Milone, A. Marino
semanticscholar +1 more source
Interstellar Extinction in 20 Open Star Clusters [PDF]
Publications Astronomical Society of Australia, 2017 The interstellar extinction law in 20 open star clusters namely, Berkeley 7, Collinder 69, Hogg 10, NGC 2362, Czernik 43, NGC 6530, NGC 6871, Bochum 10, Haffner 18, IC 4996, NGC 2384, NGC 6193, NGC 6618, NGC 7160, Collinder 232, Haffner 19, NGC 2401, NGC
G. Rangwal +3 more
semanticscholar +1 more source
An Investigation of Open Clusters Berkeley 68 and Stock 20 Using CCD UBV and Gaia DR3 Data
The Astronomical Journal, 2023 We performed detailed photometric and astrometric analyses of the open star clusters Berkeley 68 and Stock 20. This was based on ground-based CCD UBV photometric data complemented by space-based Gaia Data Release 3 (DR3) photometry and astrometry.
Talar Yontan
doaj +1 more source