Galaxy populations in the most distant SPT-SZ clusters I. Environmental quenching in massive clusters at 1.4 ≲ z ≲ 1.7

被引：51

作者：

Strazzullo, V. ^{[1
]}

Pannella, M. ^{[1
]}

Mohr, J. J. ^{[1
,2
,3
]}

Saro, A. ^{[1
,4
]}

Ashby, M. L. N. ^{[5
]}

Bayliss, M. B. ^{[6
]}

Bocquet, S. ^{[1
]}

Bulbul, E. ^{[5
]}

Khullar, G. ^{[7
,8
]}

Mantz, A. B. ^{[9
,10
]}

Stanford, S. A. ^{[11
]}

Benson, B. A. ^{[7
,8
,12
]}

Bleem, L. E. ^{[7
,13
]}

Brodwin, M. ^{[14
]}

Canning, R. E. A. ^{[9
,10
]}

Capasso, R. ^{[1
,3
]}

Chiu, I. ^{[15
]}

Gonzalez, A. H. ^{[16
]}

Gupta, N. ^{[1
,3
,17
]}

Hlavacek-Larrondo, J. ^{[18
]}

Klein, M. ^{[1
,2
]}

McDonald, M. ^{[6
]}

Noordeh, E. ^{[9
,10
]}

Rapetti, D. ^{[19
,20
]}

Reichardt, C. L. ^{[17
]}

Schrabback, T. ^{[21
]}

Sharon, K. ^{[22
]}

Stalder, B. ^{[23
]}

机构：

[1] Ludwig Maximilians Univ Munchen, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany

[2] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[3] Excellence Cluster Universe, Boltzmannstr 2, D-85748 Garching, Germany

[4] INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34143 Trieste, Italy

[5] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[6] MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[7] Univ Chicago, Kavli Inst Cosmol Phys, 5640 South Ellis Ave, Chicago, IL 60637 USA

[8] Univ Chicago, Dept Astron & Astrophys, 5640 South Ellis Ave, Chicago, IL 60637 USA

[9] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA

[10] Stanford Univ, Dept Phys, 382 Via Pueblo Mall, Stanford, CA 94305 USA

[11] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[12] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[13] Argonne Natl Lab, Div High Energy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA

[14] Univ Missouri, Dept Phys & Astron, 5110 Rockhill Rd, Kansas City, MO 64110 USA

[15] Acad Sinica, Inst Astron & Astrophys, 11F NTU Astron Math Bldg,1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan

[16] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

[17] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

[18] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[19] Univ Colorado, Ctr Astrophys & Space Astron, Dept Astrophys & Planetary Sci, Campus Box 391, Boulder, CO 80309 USA

[20] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[21] Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany

[22] Univ Michigan, Dept Phys, 450 Church St, Ann Arbor, MI 48109 USA

[23] LSST, 950 North Cherry Ave, Tucson, AZ 85719 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2019年 / 622卷

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

galaxies: general; galaxies: clusters: general; galaxies: evolution; galaxies: high-redshift; COLOR-MAGNITUDE RELATION; STAR-FORMATION HISTORIES; BAND LUMINOSITY FUNCTION; ARRAY CAMERA IRAC; RED-SEQUENCE; DENSITY RELATION; STELLAR MASS; RADIAL-DISTRIBUTION; LOCAL-DENSITY; HALO MASS;

D O I：

10.1051/0004-6361/201833944

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first results from a galaxy population study in the highest redshift galaxy clusters identified in the 2500 deg(2) South Pole Telescope Sunyaev Zel'dovich effect (SPT-SZ) survey, which is sensitive to M-500 greater than or similar to 3 x 10(14) M-Theta clusters from z similar to 0.2 out to the highest redshifts where such massive structures exist. The cluster selection is to first order independent of galaxy properties, making the SPT-SZ sample particularly well suited for cluster galaxy population studies. We carried out a four-band imaging campaign with the Hubble and Spitzer Space Telescopes of the five z greater than or similar to 1.4, S/N-SZE > 5 clusters, that are among the rarest most massive clusters known at this redshift. All five clusters show clear overdensities of red galaxies whose colors agree with the initial cluster redshift estimates, although one (SPT-CLJ0607-4448) shows a galaxy concentration much less prominent than the others. The highest redshift cluster in this sample, SPT-CLJ0459-4947 at z greater than or similar to 1.72, is the most distant M-500 greater than or similar to 3 x 10(14) M-Theta Mo cluster discovered thus far through its intracluster medium, and is one of only three known clusters in this mass range at z > 1.7, regardless of selection. Based on UVJ-like photometric classification of quiescent and star-forming galaxies, we find that the quiescent fraction in the cluster central regions (r/r(500) < 0.7) is higher than in the field at the same redshift, with corresponding environmental quenching efficiencies typically in the range similar to 0.5-0.8 for stellar masses log(M/M-Theta) > 10.85. We have explored the impact of emission from star formation on the selection of this sample, concluding that all five clusters studied here would still have been detected with S/N-SZE >5, even if they had the same quiescent fraction as measured in the field. Our results thus point towards an efficient suppression of star formation in the central regions of the most massive clusters, occurring already earlier than z similar to 1.5.

引用

页数：28

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