J/AJ/109/1903 J/AJ/109/1903 Membership to cluster IC 4756 M Missana N Missana Astron. J. 109 1903 1995 1995AJ....109.1903M Clusters, open Our method for determining statistically the members of an open cluster by means of the proper motions (Missana et al., (1990AJ....100.1850M) is amended and its validity is verified by applying it to the cluster IC 4756 with the data given by Herzog et al. (1975A&AS...19..211H), adding nothing to their results. In the computation of the dispersion ellipses of the samples and of the {chi}^2^ for deriving the significance levels, the weights of the proper motions have been taken into account. The results obtained by the criterion of the {chi}^2^ and those obtained by Herzog et al. by the criterion of the maximum likelihood of Sanders (1971A&A....14..226S) are concordant.

IC 4756C 1836+05418 39.0 +05 28

Star Number of the star in Herzog et al. (1975A&AS...19..211H) --- Mi Membership probability P(C\A). number=1 Probable member if P(C/A)>=0.5. See Missana et al., 1990AJ....100.1850M, for more details. --- n_Mi * and & indicate that the star belongs to the set of 174 and 109 cluster members respectively. --- HS Membership probability according to Herzog et al. ((1975A&AS...19..211H) --- MF Cluster member (M) or field star (F) as per phot. estimates by Herzog et al. --- B B: Blue straggler. --- James Marcout, Patricia Bauer CDS 1997Apr07 UNKNOWN UNKNOWN Prepared via OCR at CDS. J_AJ_109_1903.xml