Spitzer Planck Herschel Infrared Cluster (SPHerIC) survey: Candidate galaxy clusters at 1.3 < z < 3 selected by high star-formation rate

被引：31

作者：

Martinache, C. ^{[1
,2
]}

Rettura, A. ^{[3
]}

Dole, H. ^{[1
]}

Lehnert, M. ^{[4
]}

Frye, B. ^{[5
]}

Altieri, B. ^{[6
]}

Beelen, A. ^{[1
]}

Bethermin, M. ^{[7
]}

Le Floc'h, E. ^{[8
,9
]}

Giard, M. ^{[10
]}

Hurier, G. ^{[11
]}

Lagache, G. ^{[7
]}

Montier, L. ^{[10
]}

Omont, A. ^{[4
]}

Pointecouteau, E. ^{[10
]}

Polletta, M. ^{[7
,10
,12
]}

Puget, J. -L. ^{[1
]}

Scott, D. ^{[13
]}

Soucail, G. ^{[10
]}

Welikala, N. ^{[14
]}

机构：

[1] Univ Paris Sud, Univ Paris Saclay, CNRS, Inst Astrophys Spatiale, Bat 121, F-91405 Orsay, France

[2] Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile

[3] CALTECH, IPAC, KS 314-6, Pasadena, CA 91125 USA

[4] Sorbonne Univ, CNRS, UMR 7095, Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris, France

[5] Univ Arizona, Steward Observ, Dept Astron, 933 N Cherry Ave, Tucson, AZ 85721 USA

[6] ESA, European Space Astron Ctr, Herschel Sci Ctr, Villanueva De La Canada 28691, Spain

[7] Aix Marseille Univ, CNRS, Lab Astrophys Marseille, F-13013 Marseille, France

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

[9] Univ Paris Diderot, Sorbonne Paris Cite, AIM, CEA,CNRS, F-91191 Gif Sur Yvette, France

[10] Univ Toulouse, CNRS, UPS, IRAP, Toulouse, France

[11] CEFCA, Plaza San Juan 1 Planta 2, Teruel 44001, Spain

[12] INAF, Ist Astrofis Spaziale & Fis Cosm Milano, I-20133 Milan, Italy

[13] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[14] Univ Oxford, Subdept Astrophys, Keble Rd, Oxford OX1 3RH, England

来源：

ASTRONOMY & ASTROPHYSICS | 2018年 / 620卷

关键词：

galaxies: clusters: general; galaxies: evolution; galaxies: high-redshift; submillimeter: galaxies; infrared: galaxies; galaxies: star formation; COLOR-MAGNITUDE RELATION; FORMATION-DENSITY RELATION; STELLAR MASS; SPACE; PROTOCLUSTERS; EVOLUTION; SOUTH; ENVIRONMENT; REVERSAL; CHANDRA;

D O I：

10.1051/0004-6361/201833198

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

There is a lack of large samples of spectroscopically confirmed clusters and protoclusters at high redshifts, z > 1.5. Discovering and characterizing distant (proto-) clusters is important for yielding insights into the formation of large-scale structure and on the physical processes responsible for regulating star-formation in galaxies in dense environments. The Spitzer Planck Herschel Infrared Cluster (SPHerIC) survey was initiated to identify these characteristically faint and dust-reddened sources during the epoch of their early assembly. We present Spitzer/IRAC observations of 82 galaxy (proto-) cluster candidates at 1.3 < z(p) < 3.0 that were vetted in a two step process: (1) using Planck to select by color those sources with the highest star-formation rates, and (2) using Herschel at higher resolution to separate out the individual red sources. The addition of the Spitzer data enables efficient detection of the central and massive brightest red cluster galaxies (BRCGs). We find that BRCGs are associated with highly significant, extended and crowded regions of IRAC sources which are more overdense than the field. This result corroborates our hypothesis that BRCGs within the Planck-Herschel sources trace some of the densest and actively star-forming proto-clusters in the early Universe. On the basis of a richness-mass proxy relation, we obtain an estimate of their mean masses which suggests our sample consists of some of the most massive clusters at z approximate to 2 and are the likely progenitors of the most massive clusters observed today.

引用

页数：18

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Spitzer Planck Herschel Infrared Cluster (SPHerIC) survey: Candidate galaxy clusters at 1.3 &lt; z &lt; 3 selected by high star-formation rate

Spitzer Planck Herschel Infrared Cluster (SPHerIC) survey: Candidate galaxy clusters at 1.3 < z < 3 selected by high star-formation rate