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arXiv 1302.1876astro-ph.CO
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BUDHIES I：表征z~0.2时两个集群中及其周围的环境

BUDHIES I: characterizing the environments in and around two clusters at z~0.2

Yara L. Jaffé, Bianca M. Poggianti, Marc A. W. Verheijen, Boris Z. Deshev, Jacqueline H. van Gorkom

备注：
v2: Typos and small corrections after proofs added. 14 pages (plus small appendix), 12 figures. Accepted for publication in MNRAS. Adobe Acrobat Reader is required to correctly display the (3D) animated figures (Fig. 9). Full data tables and supporting videos are also available at the BUDHIES project website: http://www.astro.rug.nl/budhies/
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摘要：

介绍了盲超深HI环境调查（BUDHIES）的光谱学。利用韦斯特伯克综合射电望远镜，BUDHIES已经在两个阿贝尔星系团内和周围的150多个星系中检测到了z~0.2的HI。为了表征HI探测到的星系的环境，我们用William Herschel望远镜获得了多光纤光谱。在本文中，我们描述了光谱观测，报告红移和EW [OII]测量~600星系，并进行环境分析。特别是，我们提出了集群速度色散测量5集群和组的BUDHIES量，以及详细的子结构分析。

英文摘要：

We present the optical spectroscopy for the Blind Ultra Deep HI Environmental Survey (BUDHIES). With the Westerbork Synthesis Radio Telescope, BUDHIES has detected HI in over 150 galaxies in and around two Abell clusters at z~0.2. With the aim of characterizing the environments of the HI-detected galaxies, we obtained multi-fiber spectroscopy with the William Herschel Telescope. In this paper, we describe the spectroscopic observations, report redshifts and EW[OII] measurements for ~600 galaxies, and perform an environmental analysis. In particular, we present cluster velocity dispersion measurements for 5 clusters and groups in the BUDHIES volume, as well as a detailed substructure analysis.

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