Mathematics – Probability
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...278...43k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 278, no. 1, p. 43-50
Mathematics
Probability
6
Astrometry, Data Reduction, Open Clusters, Probability Density Functions, Stellar Spectrophotometry, Position (Location), Radial Velocity, Stellar Motions, Stellar Spectra
Scientific paper
A new approach to the membership problem based upon evaluation of probability density functions in multidimensional space Omega is described. Any set of data: proper motions, radial velocities, positions, photometry, spectra, etc. can be used for analysis. Space Omega is regarded as consisting of two independent kinematic Omega prime and astrophysical Omega double prime data subspaces. The optimal definition of axes of reference in subspace Omega double prime and a non-parametric method for density function evaluation is discussed. A list of NGC 6823 physical members selected in terms of proper motions, positions, photometry and spectra have been compiled. The use of all information available ensures the best possible reliabilty of star identification.
Kuznetsov Victor I.
Lazorenko Galina A.
Lazorenko Petro F.
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