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http://dx.doi.org/10.5303/JKAS.2011.44.1.33

2MASS NEAR-IR COLOR-MAGNITUDE DIAGRAM OF THE OLD OPEN CLUSTER KING 11  

Kyeong, Jae-Mann (Korea Astronomy & Space Science Institute)
Moon, Hong-Kyu (Korea Astronomy & Space Science Institute)
Kim, Sang-Chul (Korea Astronomy & Space Science Institute)
Sung, Eon-Chang (Korea Astronomy & Space Science Institute)
Publication Information
Journal of The Korean Astronomical Society / v.44, no.1, 2011 , pp. 33-38 More about this Journal
Abstract
We study near-infrared properties of the old open cluster King 11, based on the 2MASS photometric data. We determine the location of the red giant clump(RGC) in the (K, J - K) colo-magnitude diagram and derive the distance modulus of King 11 to be $(m-M)_0$ = $12.50{\pm}0.10$ using the mean K magnitude of RGC. From the red giant branch slope - [Fe/H] relation we obtain the metallicity of this cluster, [Fe/H]=$-0.17{\pm}0.07$. The age and interstellar reddening of this cluster are estimated to be log t = $9.48{\pm}0.05$, E(B-V)=$0.90{\pm}0.03$, by applying Padova isochrone fits to the data.
Keywords
open clusters and associations: individual (King 11); Galaxy: stellar content;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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