NOAO >   Observing Info >   Approved Programs >   2010B-0178

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Proposal Information for 2010B-0178


PI: Sang Chul KIM, Korea Astronomy and Space Science Institute, sckim@kasi.re.kr
Address: Optical and Infrared Division, 61-1, Hwaam-dong, Yuseong-gu, Daejeon 305-348, South Korea

CoI: Hong Soo PARK, Korea Astronomy and Space Science Institute
CoI: Joon Hyeop LEE, Korea Astronomy and Space Science Institute
CoI: Jaemann KYEONG, Korea Astronomy and Space Science Institute

Title: Origin of the Outer Galactic Disk Open Clusters

Abstract: The existence of age and/or metallicity gradient of the Galactic disk gives valuable information on how the Galactic disk formed and evolved. The studies on outer Galactic disk in this respect are quite insufficient and still lack data. We propose to perform UBVI imaging observations of 15 open clusters (OCs) in the outer Galactic disk to study (i) the physical characteristics of the little studied clusters themselves and (ii) the formation and evolution history of the outer Galactic disk. We chose target OCs in the anti-Galactocentric area outside of the Solar Circle to use them as the probe of the outer Galactic disk. OCs located at the anti-Galactocentric direction whose distances not yet known are also included to enlarge the database on OCs and on probes for the study on the Galactic disk. By studying these OCs, we can obtain not only information on the metallicities and ages of the clusters but also constraints on those of the outer disk as a function of the galactocentric radius. The results will provide clues on the origin of the outer disk OCs, whether they are from disk accretion or radial outward migration.


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