Spectroscopic Confirmation and Velocity Dispersions for 20 Planck Galaxy Clusters at 0.16 < z < 0.78

被引：12

作者：

Amodeo, Stefania ^{[1
]}

Mei, Simona ^{[1
,2
,3
,4
]}

Stanford, Spencer A. ^{[5
,6
]}

Lawrence, Charles R. ^{[3
]}

Bartlett, James G. ^{[3
,7
]}

Stern, Daniel ^{[3
]}

Chary, Ranga-Ram ^{[8
]}

Shim, Hyunjin ^{[9
]}

Marleau, Francine R. ^{[10
,11
]}

Melin, Jean-Baptiste ^{[12
]}

Rodriguez-Gonzalvez, Carmen ^{[8
]}

机构：

[1] UPMC Univ Paris 06, Sorbonne Univ, PSL Res Univ, CNRS,LERMA,Observ Paris, F-75014 Paris, France

[2] Univ Paris Denis Diderot, Univ Paris Sorbonne Cite, F-75205 Paris 13, France

[3] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91011 USA

[4] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

[5] Univ Calif Davis, Dept Phys, One Shields Ave, Davis, CA 95616 USA

[6] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA

[7] Univ Paris Diderot, CNRS, IN2P3,Sorbonne Paris Cite, CEA,Lrfu,Observ Paris,Astroparticule & Cosmol,APC, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France

[8] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

[9] Kyungpook Natl Univ, Dept Earth Sci Educ, Daegu, South Korea

[10] Natl Opt Astron Observ, Tucson, AZ 85719 USA

[11] Univ Innsbruck, Inst Astro & Particle Phys, A-6020 Innsbruck, Austria

[12] Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France

来源：

ASTROPHYSICAL JOURNAL | 2018年 / 853卷 / 01期

基金：

美国国家科学基金会;

关键词：

cosmology: observations; galaxies: clusters: general; galaxies: distances and redshifts; CATALOG; SCALE; RESOLUTION; COSMOLOGY; ALGORITHM; DYNAMICS; SKY;

D O I：

10.3847/1538-4357/aa98dd

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Gemini and Keck spectroscopic redshifts and velocity dispersions for 20 clusters detected via the Sunyaev-Zel'dovich (SZ) effect by the Planck space mission, with estimated masses in the range 2.3 x 10(14)M(circle dot) < M-500(P1) < 9.4 x 10(14) M-circle dot. Cluster members were selected for spectroscopic follow-up with Palomar, Gemini, and Keck optical and (in some cases) infrared imaging. Seven cluster redshifts were measured for the first time with this observing campaign, including one of the most distant Planck clusters confirmed to date, at z= 0.782. 0.010, PSZ2 G085.95+25.23. The spectroscopic redshift catalogs of members of each confirmed cluster are included as online tables. We show the galaxy redshift distributions and measure the cluster velocity dispersions. The cluster velocity dispersions obtained in this paper were used in a companion paper to measure the Planck mass bias and to constrain the cluster velocity bias.

引用

页数：15

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Spectroscopic Confirmation and Velocity Dispersions for 20 Planck Galaxy Clusters at 0.16 &lt; z &lt; 0.78

Spectroscopic Confirmation and Velocity Dispersions for 20 Planck Galaxy Clusters at 0.16 < z < 0.78