X-RAY PROPERTIES OF THE FIRST SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTER SAMPLE FROM THE SOUTH POLE TELESCOPE

被引：138

作者：

Andersson, K. ^{[1
,2
]}

Benson, B. A. ^{[3
,4
]}

Ade, P. A. R. ^{[5
]}

Aird, K. A. ^{[6
]}

Armstrong, B. ^{[7
]}

Bautz, M. ^{[1
]}

Bleem, L. E. ^{[3
,8
]}

Brodwin, M. ^{[9
]}

Carlstrom, J. E. ^{[3
,4
,6
,8
]}

Chang, C. L. ^{[3
,4
]}

Crawford, T. M. ^{[3
,6
]}

Crites, A. T. ^{[3
,6
]}

de Haan, T. ^{[10
]}

Desai, S. ^{[7
]}

Dobbs, M. A. ^{[10
]}

Dudley, J. P. ^{[10
]}

Foley, R. J. ^{[9
]}

Forman, W. R. ^{[9
]}

Garmire, G. ^{[11
]}

George, E. M. ^{[12
]}

Gladders, M. D. ^{[3
,6
]}

Halverson, N. W. ^{[13
,14
]}

High, F. W. ^{[15
]}

Holder, G. P. ^{[10
]}

Holzapfel, W. L. ^{[12
]}

Hrubes, J. D. ^{[6
]}

Jones, C. ^{[9
]}

Joy, M. ^{[16
]}

Keisler, R. ^{[3
,8
]}

Knox, L. ^{[17
]}

Lee, A. T. ^{[12
,18
]}

Leitch, E. M. ^{[3
,6
]}

Lueker, M. ^{[12
]}

Marrone, D. P. ^{[3
,6
]}

McMahon, J. J. ^{[3
,4
,19
]}

Mehl, J. ^{[3
,6
]}

Meyer, S. S. ^{[3
,4
,6
,8
]}

Mohr, J. J. ^{[2
,20
,21
]}

Montroy, T. E. ^{[22
,23
]}

Murray, S. S. ^{[9
]}

Padin, S. ^{[3
,6
]}

Plagge, T. ^{[6
,12
]}

Pryke, C. ^{[3
,4
,6
]}

Reichardt, C. L. ^{[12
]}

Rest, A. ^{[15
]}

Ruel, J. ^{[15
]}

Ruhl, J. E. ^{[22
,23
]}

Schaffer, K. K. ^{[3
,4
]}

Shaw, L. ^{[10
,24
]}

Shirokoff, E. ^{[12
]}

机构：

[1] MIT, MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[2] Univ Munich, Dept Phys, D-81679 Munich, Germany

[3] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[4] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[5] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3YB, S Glam, Wales

[6] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[7] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[8] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[9] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[10] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[11] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[12] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[13] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA

[14] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[15] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[16] NASA, Marshall Space Flight Ctr, Dept Space Sci, VP62, Huntsville, AL 35812 USA

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

[18] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA

[19] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[20] Excellence Cluster Universe, D-85748 Garching, Germany

[21] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[22] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

[23] Case Western Reserve Univ, CERCA, Cleveland, OH 44106 USA

[24] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[25] CALTECH, Pasadena, CA 91125 USA

[26] Space Res Inst IKI, Moscow, Russia

来源：

ASTROPHYSICAL JOURNAL | 2011年 / 738卷 / 01期

基金：

美国国家科学基金会;

关键词：

galaxies: clusters: intracluster medium; X-rays: galaxies: clusters; XMM-NEWTON; SCALING RELATIONS; RELATIVISTIC CORRECTIONS; LENSING MEASUREMENTS; INTRACLUSTER MEDIUM; LINEAR-REGRESSION; MASS MEASUREMENTS; PRESSURE PROFILE; BACKGROUND LIGHT; NEARBY CLUSTERS;

D O I：

10.1088/0004-637X/738/1/48

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of X-ray observations of a sample of 15 clusters selected via their imprint on the cosmic microwave background from the thermal Sunyaev-Zel'dovich (SZ) effect. These clusters are a subset of the first SZ-selected cluster catalog, obtained from observations of 178 deg(2) of sky surveyed by the South Pole Telescope (SPT). Using X-ray observations with Chandra and XMM-Newton, we estimate the temperature, T-X, and mass, M-g, of the intracluster medium within r(500) for each cluster. From these, we calculate Y-X = MgTX and estimate the total cluster mass using an M-500-Y-X scaling relation measured from previous X-ray studies. The integrated Comptonization, Y-SZ, is derived from the SZ measurements, using additional information from the X-ray-measured gas density profiles and a universal temperature profile. We calculate scaling relations between the X-ray and SZ observables and find results generally consistent with other measurements and the expectations from simple self-similar behavior. Specifically, we fit a Y-SZ-Y-X relation and find a normalization of 0.82 +/- 0.07, marginally consistent with the predicted ratio of Y-SZ/Y-X = 0.91 +/- 0.01 that would be expected from the density and temperature models used in this work. Using the Y-X-derived mass estimates, we fit a Y-SZ-M-500 relation and find a slope consistent with the self-similar expectation of Y-SZ proportional to M-5/3 with a normalization consistent with predictions from other X-ray studies. We find that the SZ mass estimates, derived from cosmological simulations of the SPT survey, are lower by a factor of 0.78 +/- 0.06 relative to the X-ray mass estimates. This offset is at a level of 1.3 sigma when considering the similar to 15% systematic uncertainty for the simulation-based SZ masses. Overall, the X-ray measurements confirm that the scaling relations of the SZ-selected clusters are consistent with the properties of other X-ray-selected samples of massive clusters, even allowing for the broad redshift range (0.29 < z < 1.08) of the sample.

引用

页数：25

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