MEMBERSHIP STUDY IN MULTIDIMENSIONAL DATA SPACE WITH AN APPLICATION TO THE OPEN CLUSTER NGC-6823

Authors
KUZNETSOV VI LAZORENKO GA LAZORENKO PF
Citation
Vi. Kuznetsov et al., MEMBERSHIP STUDY IN MULTIDIMENSIONAL DATA SPACE WITH AN APPLICATION TO THE OPEN CLUSTER NGC-6823, Astronomy and astrophysics, 278(1), 1993, pp. 43-50
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
278
Issue
1
Year of publication
1993
Pages
43 - 50
Database
ISI
SICI code
0004-6361(1993)278:1<43:MSIMDS>2.0.ZU;2-S
Abstract
A new approach to the membership problem based upon evaluation of prob ability density functions in multidimensional space OMEGA is described . Any set of data: proper motions, radial velocities, positions, photo metry, spectra, etc. can be used for analysis. Space OMEGA is regarded as consisting of two independent kinematic OMEGA' and astrophysical O MEGA'' data subspaces. The optimal definition of axes of reference in subspace OMEGA'' and a non-parametric method for density function eval uation is discussed. A list of NGC 6823 physical members selected in t erms of proper motions, positions, photometry and spectra have been co mpiled. The use of all information available ensures the best possible reliability of star identification.