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Discovery of remote star clusters in the halo of the Irregular galaxy NGC 6822

Published online by Cambridge University Press:  08 November 2005

Narae Hwang
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Myung Gyoon Lee
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Jong Chul Lee
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Won-Kee Park
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Hong Soo Park
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Jang-Hyun Park
Affiliation:
Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
Sangmo Tony Sohn
Affiliation:
Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
Sang-Gak Lee
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Hyung Mok Lee
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr
Mun-Suk Chun
Affiliation:
Center for Space Astrophysics, Yonsei University, Seoul 120-179 Korea
Young-Wook Lee
Affiliation:
Center for Space Astrophysics, Yonsei University, Seoul 120-179 Korea
Young-Jong Sohn
Affiliation:
Center for Space Astrophysics, Yonsei University, Seoul 120-179 Korea
In-Soo Yuk
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
Sang Chul Kim
Affiliation:
Astronomy Program SEES, Seoul National University, Seoul 151-742 Korea email: nhwang@astro.snu.ac.kr Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
Ho-Il Kim
Affiliation:
Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
Wonyong Han
Affiliation:
Korea Astronomy & Space Science Institute, 61-1 Whaam Yuseong, Daejeon 305-348, Korea
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Abstract

We report the discovery of three new star clusters in the halo of the Local Group dwarf irregular galaxy NGC 6822. These clusters were found in the deep images taken with the MegaPrime at the CFHT covering a total field of 2 deg $\times$ 2 deg. The most remote cluster is found to be located as far as 79 arcmin away from the center of NGC 6822. This distance is several times larger than the size of the region in NGC 6822 where star clusters were previously found. Morphological structures of the clusters and color-magnitude diagrams of the resolved stars in the clusters show that at least two of these clusters are proabably old globular clusters.

Type
Contributed Papers
Copyright
© 2005 International Astronomical Union
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