Spectroscopic Confirmation of Five Galaxy Clusters at z > 1.25 in the 2500 deg2 SPT-SZ Survey
Spectroscopic Confirmation of Five Galaxy Clusters at z > 1.25 in the 2500 deg2 SPT-SZ Survey
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2500 deg2 SPT-SZ 巡天中 z > 1.25 处五个星系团的光谱确认
DOI：
10.3847/1538-4357/aaeed0
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
V. Strazzullo
中科院分区：
文献类型：
--
作者：
G. Khullar;L. Bleem;L. Bleem;M. Bayliss;M. Gladders;B. Benson;B. Benson;M. Mcdonald;S. Allen;S. Allen;D. Applegate;M. Ashby;S. Bocquet;M. Brodwin;E. Bulbul;R. Canning;R. Capasso;I. Chiu;T. Crawford;T. Haan;J. Dietrich;Anthony H. Gonzalez;J. Hlavacek;H. Hoekstra;W. Holzapfel;A. V. D. Linden;A. Mantz;S. Patil;C. Reichardt;A. Saro;K. Sharon;B. Stalder;S. Stanford;A. Stark;V. Strazzullo
我们提出了光谱确认的5个星系团在1.25 < z < 1.5，发现在2500 deg 2南极望远镜Sunyaev-Zel'dovich（SZ）的调查。这些集群，从一个质量有限的样本与一个几乎红移独立的选择功能，有多波长的后续成像数据从X射线近红外，目前形成已知的最均匀的大规模高红移集群样本。我们确定了44个成员星系，沿着与25个场星系，在5个集群，并描述了全套的观测和数据产品从麦哲伦/LDSS 3多目标光谱这些集群领域。我们简要介绍了分析管道和集群成员星系，证明了测量的红移的可靠性，目前的系综分析。我们报告z = 1.259，1.288，1.316，1.401，和1.474的五个集群的组合的吸收线（Ca ii H&K双峰-λλ3968，3934）和发射线（[O ii] λλ3727，3729）的光谱特征。此外，计算出的速度色散产生动态集群质量与SZ质量为这些集群。我们讨论的速度和空间分布的被动和[O II]-发射星系在这些集群中，表明它们是一致的速度分离和偏见观察到的较低的红移南极望远镜集群。我们确定适度的[O II]发射和明显的CN和Hδ吸收的28个被动星系的钙II H& K衍生的红移的堆叠光谱。这项工作增加了光谱确认的SZ选择星系团的数量，从3个增加到8个，进一步证明了SZ选择对最高红移质量星系团的有效性，并使这些系统的详细研究成为可能。
We present spectroscopic confirmation of five galaxy clusters at 1.25 < z < 1.5, discovered in the 2500 deg2 South Pole Telescope Sunyaev–Zel’dovich (SZ) survey. These clusters, taken from a mass-limited sample with a nearly redshift-independent selection function, have multiwavelength follow-up imaging data from the X-ray to near-IR and currently form the most homogeneous massive high-redshift cluster sample known. We identify 44 member galaxies, along with 25 field galaxies, among the five clusters, and describe the full set of observations and data products from Magellan/LDSS3 multiobject spectroscopy of these cluster fields. We briefly describe the analysis pipeline and present ensemble analyses of cluster member galaxies that demonstrate the reliability of the measured redshifts. We report z = 1.259, 1.288, 1.316, 1.401, and 1.474 for the five clusters from a combination of absorption-line (Ca ii H&K doublet—λλ3968, 3934) and emission-line ([O ii] λλ3727, 3729) spectral features. Moreover, the calculated velocity dispersions yield dynamical cluster masses in good agreement with the SZ masses for these clusters. We discuss the velocity and spatial distributions of passive and [O ii]-emitting galaxies in these clusters, showing that they are consistent with velocity segregation and biases observed in lower redshift South Pole Telescope clusters. We identify modest [O ii] emission and pronounced CN and Hδ absorption in a stacked spectrum of 28 passive galaxies with Ca ii H&K-derived redshifts. This work increases the number of spectroscopically confirmed SZ-selected galaxy clusters at z > 1.25 from three to eight, further demonstrating the efficacy of SZ selection for the highest redshift massive clusters and enabling detailed study of these systems.
DOI：
10.1088/0004-637x/722/2/1180
发表时间：
2010-03
期刊：
The Astrophysical Journal
影响因子：
--
作者：
F. W. High;B. Stalder;J. Song;P. Ade;K. Aird;S. Allam;R. Armstrong;W. Barkhouse;B. Benson;B. Benson;E. Bertin;Suman Bhattacharya;L. Bleem;M. Brodwin;E. Buckley-Geer;J. Carlstrom;P. Challis;C. Chang;T. Crawford;A. Crites;T. Haan;S. Desai;M. Dobbs;J. Dudley;R. Foley;E. George;M. Gladders;N. Halverson;M. Hamuy;S. Hansen;G. Holder;W. Holzapfel;J. Hrubeš;M. Joy;R. Keisler;Adrian T. Lee;Adrian T. Lee;E. Leitch;Huan Lin;Yen-Ting Lin;A. Loehr;M. Lueker;D. Marrone;J. McMahon;J. McMahon;J. Mehl;S. Meyer;J. J. Mohr-J.;T. Montroy;N. Morell;C. Ngeow;S. Padin;T. Plagge;T. Plagge;C. Pryke;C. Reichardt;A. Rest;J. Ruel;J. Ruhl;K. Schaffer;L. Shaw;L. Shaw;E. Shirokoff;R. C. Smith;H. Spieler;Z. Staniszewski;A. Stark;C. Stubbs;D. Tucker;K. Vanderlinde;J. Vieira;R. Williamson;W. M. Wood-Vasey;Y. Yang;O. Zahn;A. Zenteno
通讯作者：
F. W. High;B. Stalder;J. Song;P. Ade;K. Aird;S. Allam;R. Armstrong;W. Barkhouse;B. Benson;B. Benson;E. Bertin;Suman Bhattacharya;L. Bleem;M. Brodwin;E. Buckley-Geer;J. Carlstrom;P. Challis;C. Chang;T. Crawford;A. Crites;T. Haan;S. Desai;M. Dobbs;J. Dudley;R. Foley;E. George;M. Gladders;N. Halverson;M. Hamuy;S. Hansen;G. Holder;W. Holzapfel;J. Hrubeš;M. Joy;R. Keisler;Adrian T. Lee;Adrian T. Lee;E. Leitch;Huan Lin;Yen-Ting Lin;A. Loehr;M. Lueker;D. Marrone;J. McMahon;J. McMahon;J. Mehl;S. Meyer;J. J. Mohr-J.;T. Montroy;N. Morell;C. Ngeow;S. Padin;T. Plagge;T. Plagge;C. Pryke;C. Reichardt;A. Rest;J. Ruel;J. Ruhl;K. Schaffer;L. Shaw;L. Shaw;E. Shirokoff;R. C. Smith;H. Spieler;Z. Staniszewski;A. Stark;C. Stubbs;D. Tucker;K. Vanderlinde;J. Vieira;R. Williamson;W. M. Wood-Vasey;Y. Yang;O. Zahn;A. Zenteno
影响因子：
6.5
作者：
P. Rosati;P. Tozzi;R. Gobat;Joana S. Santos;M. Nonino;R. Demarco;C. Lidman;C. Lidman;C. Mullis;V. Strazzullo;H. Böhringer;R. Fassbender;Kyle S. Dawson;Masayuki Tanaka;J. Jee;H. Ford;G. Lamer;A. Schwope
通讯作者：
P. Rosati;P. Tozzi;R. Gobat;Joana S. Santos;M. Nonino;R. Demarco;C. Lidman;C. Lidman;C. Mullis;V. Strazzullo;H. Böhringer;R. Fassbender;Kyle S. Dawson;Masayuki Tanaka;J. Jee;H. Ford;G. Lamer;A. Schwope
XXL 调查
DOI：
10.1051/0004-6361/201526891
发表时间：
2016
期刊：
影响因子：
--
作者：
Pacaud;. . . ;Reiprich
通讯作者：
Reiprich