천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제38권2호
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- Pages.55.1-55.1
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- 2013
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- 1226-2692(pISSN)
Progress Report on the Relationship Between the Bright and Faint Galaxies in Abell 3659
- Lee, Hye-Ran (Korea Astronomy and Space Science Institute) ;
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Lee, Joon Hyeop
(Korea Astronomy and Space Science Institute) ;
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Kim, Minjin
(Korea Astronomy and Space Science Institute) ;
- Oh, Seulhee (Yonsei University) ;
- Ree, Chang Hee (Korea Astronomy and Space Science Institute) ;
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Jeong, Hyunjin
(Korea Astronomy and Space Science Institute) ;
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Kyeong, Jaemann
(Korea Astronomy and Space Science Institute) ;
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Kim, Sang Chul
(Korea Astronomy and Space Science Institute) ;
- Lee, Jong Chul (Korea Astronomy and Space Science Institute) ;
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Ko, Jongwan
(Korea Astronomy and Space Science Institute) ;
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Park, Byeong-Gon
(Korea Astronomy and Space Science Institute) ;
- Sheen, Yun-Kyeong (University of Concepcion)
- 발행 : 2013.10.08
초록
The properties of bright galaxies are closely related to those neighbors and satellite galaxies. However, the effects of nearby companion are known to be very weak in a galaxy cluster, when the companions are bright galaxies. On the other hand, until now, it has not been clear whether the properties of bright galaxies are affected by their faint satellites in a galaxy cluster. Recently, J. H. Lee et al. (in preparation) have found that the colors of bright galaxies in WHL J085910.0+294957, a galaxy cluster at z = 0.3, show a measurable correlation with the mean colors of faint galaxies around them. To confirm that result and to investigate the host-satellite relationship depending on cluster properties, we carry out follow-up studies of a few galaxy clusters, beginning with Abell 3659 (z ~ 0.0907) imaged in the g' and r' bands using IMACS on the Magellan (Baade) 6.5m telescope. Cluster members are selected based on the distributions of color, size and concentration along magnitude and spatial distribution. In this poster, we present some preliminary results: marginal correlations in color between bright galaxies and their faint companions are found at the central region of Abell 3659. The implication of these results is discussed.
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