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- W2023163534 abstract "view Abstract Citations (45) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Intermediate-Age Cluster IC 4651 Eggen, O. J. Abstract Two hundred and ten UB V observations of 102 stars in the region of the open cluster IC 465t show that it is an intermediate-age cluster with a modulus of 9.5 mag and an ultraviolet excess of +0.06 mag for main-sequence stars with an intrinsic color of B - V = +0.45 mag. Observations of seven earlytype stars in the region show that the cluster reddening is E(B - V) = +0.15 mag. The cluster is apparently only slightly older than NGC 752 but is considerably richer and contains more than a dozen red giants. A comparison of the various features of the color-luminosity arrays of this and other old and intermediate-age clusters suggests a significant spread in the ages of the stars within a cluster, which would tend to blur some of the indicators used to measure the mean age and the chemical composition of cluster stars. Publication: The Astrophysical Journal Pub Date: May 1971 DOI: 10.1086/150943 Bibcode: 1971ApJ...166...87E full text sources ADS | data products SIMBAD (110) GCPD (1)" @default.
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- W2023163534 date "1971-05-01" @default.
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- W2023163534 title "The Intermediate-Age Cluster IC 4651" @default.
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