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- W2898678267 abstract "We utilize the data from the Apache Point Observatory Galactic Evolution Experiment-2 (APOGEE-2) in the fourteenth data release of the Sloan Digital Sky Survey (SDSS) to calculate the line-of-sight velocity dispersion $sigma_{1D}$ of a sample of old open clusters (age larger than 100,Myr) selected from the Milky Way open cluster catalog of Kharchenko et al. (2013). Together with their $K_s$ band luminosity $L_{K_s}$, and the half-light radius $r_{h}$ of the most probable members, we find that these three parameters show significant pairwise correlations among each other. Moreover, a fundamental plane-{it like} relation among these parameters is found for the oldest open clusters (age older than 1,Gyr), $L_{K_s}proptosigma_{1D}^{0.82pm0.29}cdot r_h^{2.19pm0.52}$ with $rms sim, 0.31$,mag in the $K_s$ band absolute magnitude. The existence of this relation, which deviates significantly from the virial theorem prediction, implies that the dynamical structures of the old open clusters are quite similar, when survived from complex dynamical evolution to age older than 1 Gyr." @default.
- W2898678267 created "2018-11-09" @default.
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- W2898678267 date "2018-11-16" @default.
- W2898678267 modified "2023-09-27" @default.
- W2898678267 title "The Fundamental Plane of Open Clusters" @default.
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- W2898678267 doi "https://doi.org/10.3847/2041-8213/aaedaa" @default.
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