A detection of the layered structure of nearby open clusters
arXiv:2302.02750 · doi:10.1051/0004-6361/202244199
Abstract
We applied the newly developed rose diagram overlay method to detect the layered structure of 88 nearby open clusters (500~pc) on the three projections after the distance correction of their member stars, based on the catalog in literature. The results show that with the rose diagram overlay method, a total of 74 clusters in our sample have a layered structure, while the remaining clusters are without a clear layered structure. We for the first time defined the layered structure parameters for the sample clusters. Meanwhile, we found that the layered circle core area () has a strong positive correlation with the number of cluster members, while the kernel instability index () has a strong negative correlation with the number of cluster members. Our study provides a novel perspective for the detection of the layered structure of open clusters.
arXiv comment11 pages, 9 figures, 6 tables, accepted for publication in A&A
References in corpus (27)
- Astropy: A Community Python Package for Astronomy
- A Universal Density Profile from Hierarchical Clustering
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- Embedded Clusters in Molecular Clouds
- Gaia Data Release 2: The astrometric solution
- galpy: A Python Library for Galactic Dynamics
- Gaia Data Release 2: using Gaia parallaxes
- Painting a portrait of the Galactic disc with its stellar clusters
- Estimating distances from parallaxes
- On the fraction of star formation occurring in bound stellar clusters
- The statistical Analysis of Star Clusters
- Clusters and mirages: cataloguing stellar aggregates in the Milky Way
- Dynamical mass segregation on a very short timescale
- A dynamical origin for early mass segregation in young star clusters
- Extended stellar systems in the solar neighborhood -- V. Discovery of coronae of nearby star clusters
- Morphology of Galactic Open Clusters
- Structure and mass segregation in Galactic stellar clusters
- 3D Morphology of Open Clusters in the Solar Neighborhood with Gaia EDR3: its Relation to Cluster Dynamics
- The extended halo of NGC 2682 (M 67) from Gaia DR2
- Gravitational tidal effects on galactic open clusters
- Does sub-cluster merging accelerate mass segregation in local star formation?
- The Galactic metallicity gradient shown by open clusters in the light of radial migration
- Diagnosing the Stellar Population and Tidal Structure of the Blanco1 Star Cluster
- Shape parameters of Galactic open clusters
- Structure and stellar content analysis of the open cluster M11 with 2MASS photometry
- Deciphering Star Cluster Evolution by Shape Morphology
- Decoding the Morphological Evolution of Open Clusters