Witnessing the Hierarchical Assembly of the Brightest Cluster Galaxy in a Cluster at z = 1.26
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Authors
Yamada, Tomu
Koyama, Y
Nakata, F
Kajisawa, M
Tanaka, Ichi
Kodama, T
Okamura, Satoshi
De Propris, Roberto
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IOP Publishing
Abstract
We have obtained a new high-resolution K′-band image of the central region of the rich X-ray cluster RX J0848.9+4452 at z = 1.26. We found that the brightest cluster galaxy (BCG) in the cluster is clearly separated into two distinct objects. Whereas the
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Astrophysical Journal, The