2005年4月
Panoramic views of cluster-scale assemblies explored by subaru wide-field Imaging
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
- 巻
- 57
- 号
- 2
- 開始ページ
- 309
- 終了ページ
- 323
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/pasj/57.2.309
- 出版者・発行元
- OXFORD UNIV PRESS
We have started PISCES project; a panoramic imaging and spectroscopic survey of distant clusters on Subaru. It exploits the unique wide-field imaging capability of Suprime-Cam, which provides a 34' x 27' field of view corresponding to a physical area of 16 x 13 Mpc(2) at z similar to 1. We plan to target 15 clusters at 0.4 less than or similar to z less than or similar to 1.3. We report on our first results concerning the inner structures and large-scale structures of two distant clusters at z = 0.55 and 0.83 together with the earlier results on a z = 0.41 cluster. The photometric redshift technique has been applied to multi-color data in order to remove most of the foreground/background galaxies so as to isolate the cluster member candidates. We have found large-scale filamentary structures around the clusters, extending out to > 5 Mpc from the cores, as well as complex inner structures. The galaxy distributions in the inner regions of the clusters look similar to the X-ray intensity maps, suggesting tha. most of the optical structures trace physically bound systems. We also compared the structures of the three clusters with those of model clusters in a numerical simulation (N-body + semi-analytic model) by parameterising the shapes of the iso-density contours of galaxies, and found a broad agreement. Our results that cluster-scale assembly takes place along filaments during hierarchical clustering need to be confirmed spectroscopically in the near future.
- リンク情報
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- DOI
- https://doi.org/10.1093/pasj/57.2.309
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902202748011700
- CiNii Articles
- http://ci.nii.ac.jp/naid/10023936667
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000229007000005&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1093/pasj/57.2.309
- ISSN : 0004-6264
- eISSN : 2053-051X
- J-Global ID : 200902202748011700
- CiNii Articles ID : 10023936667
- Web of Science ID : WOS:000229007000005