Membership Probability via Control Field Colour-Magnitude Decontamination - Astrophysics > Astrophysics of GalaxiesReportar como inadecuado




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Abstract: The open clusters fundamental physical parameters are important tools tounderstand the formation and evolution of the Galactic disk and as groundingtests for star formation and evolution models. However only a small fraction ofthe known open clusters in the Milky Way has precise determination of distance,reddening, age, metallicity, radial velocity and proper motion. One of themajor problems in determining these parameters lies on the difficulty toseparate cluster members from field stars and to assign membership. We proposea decontamination method by employing 2MASS data in the encircling region ofthe clusters NGC1981, NGC2516, NGC6494 and M11. We present a decontaminated CMDof these objects showing the membership probabilities and structural parametersas derived from King profile fitting.



Autor: Wagner J. B. Corradi, Francisco F. S. Maia, Joao F. C. Santos Jr

Fuente: https://arxiv.org/



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