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Title: Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3

Abstract

The galaxy phase-space distribution in galaxy clusters provides insights into the formation and evolution of cluster galaxies, and it can also be used to measure cluster mass profiles. We present a dynamical study based on $$\sim$$3000 passive, non-emission line cluster galaxies drawn from 110 galaxy clusters. The galaxy clusters were selected using the Sunyaev-Zel'dovich effect (SZE) in the 2500~deg$^2$ SPT-SZ survey and cover the redshift range $0.2 < z < 1.3$. We model the clusters using the Jeans equation, while adopting NFW mass profiles and a broad range of velocity dispersion anisotropy profiles. The data prefer velocity dispersion anisotropy profiles that are approximately isotropic near the center and increasingly radial toward the cluster virial radius, and this is true for all redshifts and masses we study. The pseudo-phase-space density profile of the passive galaxies is consistent with expectations for dark matter particles and subhalos from cosmological $N$-body simulations. The dynamical mass constraints are in good agreement with external mass estimates of the SPT cluster sample from either weak lensing, velocity dispersions, or X-ray $$Y_X$$ measurements. However, the dynamical masses are lower (at the 2.2$$\sigma$$ level) when compared to the mass calibration favored when fitting the SPT cluster data to a $$\Lambda$$CDM model with external cosmological priors, including CMB anisotropy data from Planck. The discrepancy grows with redshift, where in the highest redshift bin the ratio of dynamical to SPT+Planck masses is $$\eta=0.63^{+0.13}_{-0.08}\pm0.06$$ (statistical and systematic), corresponding to a $$2.6\sigma$$ discrepancy.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [1];  [7];  [8];  [9];  [10];  [11];  [8];  [12];  [13];  [1];  [1];  [14];  [15];  [16] more »;  [17];  [8];  [18];  [19];  [20];  [21];  [22];  [21];  [23];  [24] « less
  1. Ludwig-Maximilians-Univ., Munich (Germany); Excellence Cluster Universe, Garching (Germany)
  2. Ludwig-Maximilians-Univ., Munich (Germany); Excellence Cluster Universe, Garching (Germany); Istituto Nazionale di Astrofisica (INAF), Trieste (Italy). Osservatorio Astronomico
  3. Ludwig-Maximilians-Univ., Munich (Germany); Excellence Cluster Universe, Garching (Germany); ; Max Planck Inst. for Extraterrestrial Physics, Garching (Germany)
  4. Istituto Nazionale di Astrofisica (INAF), Trieste (Italy). Osservatorio Astronomico
  5. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Ludwig-Maximilians-Univ., Munich (Germany)
  7. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
  8. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Kavli Inst. for Astrophysics and Space Research
  9. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, and Dept. of Astronomy and Astrophysics; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  10. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics, and Dept. of Physics; Argonne National Lab. (ANL), Argonne, IL (United States)
  11. Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
  12. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics, and Dept. of Physics, and Enrico Fermi Inst.
  13. Academia Sinica, Taipei (Taiwan). Inst. of Astronomy and Astrophysics
  14. Univ. of California, Berkeley, CA (United States). Dept. of Physics; McGill Univ., Montreal, QC (Canada). Dept of Physics
  15. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology, and Dept. of Physics; Univ. of Montreal, Quebec (Canada)
  16. Ludwig-Maximilians-Univ., Munich (Germany); Max Planck Inst. for Extraterrestrial Physics, Garching (Germany)
  17. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology, and Dept. of Physics; Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy; Univ. of Copenhagen (Denmark). The Niels Bohr Inst., Dark Cosmology Centre
  18. Ludwig-Maximilians-Univ., Munich (Germany); Excellence Cluster Universe, Garching (Germany); Univ. of Colorado, Boulder, CO (United States). Center for Astrophysics and Space Astronomy, Dept. of Astrophysical and Planetary Sciences; NASA Ames Research Center (ARC), Moffett Field, Mountain View, CA (United States)
  19. Univ. of Melbourne, Parkville, VIC (Australia)
  20. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Astronomy
  21. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  22. Univ. of California, Davis, CA (United States). Dept. of Physics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Inst. of Geophysics and Planetary Physics
  23. Ludwig-Maximilians-Univ., Munich (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany)
  24. Cerro Tololo Inter-American Observatory, La Serena (Chile)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
SPT
OSTI Identifier:
1479839
Alternate Identifier(s):
OSTI ID: 1413675
Report Number(s):
arXiv:1711.09903; FERMILAB-PUB-17-571-AE
Journal ID: ISSN 0035-8711; 1639208
Grant/Contract Number:  
AC02-07CH11359; AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 482; Journal Issue: 1; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Capasso, R., Saro, A., Mohr, J. J., Biviano, A., Bocquet, S., Strazzullo, V., Grandis, S., Applegate, D. E., Bayliss, M. B., Benson, B. A., Bleem, L. E., Brodwin, M., Bulbul, E., Carlstrom, J. E., Chiu, I., Dietrich, J. P., Gupta, N., de Haan, T., Hlavacek-Larrondo, J., Klein, M., von der Linden, A., McDonald, M., Rapetti, D., Reichardt, C. L., Sharon, K., Stalder, B., Stanford, S. A., Stark, A. A., Stern, C., and Zenteno, A. Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3. United States: N. p., 2018. Web. doi:10.1093/mnras/sty2645.
Capasso, R., Saro, A., Mohr, J. J., Biviano, A., Bocquet, S., Strazzullo, V., Grandis, S., Applegate, D. E., Bayliss, M. B., Benson, B. A., Bleem, L. E., Brodwin, M., Bulbul, E., Carlstrom, J. E., Chiu, I., Dietrich, J. P., Gupta, N., de Haan, T., Hlavacek-Larrondo, J., Klein, M., von der Linden, A., McDonald, M., Rapetti, D., Reichardt, C. L., Sharon, K., Stalder, B., Stanford, S. A., Stark, A. A., Stern, C., & Zenteno, A. Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3. United States. doi:10.1093/mnras/sty2645.
Capasso, R., Saro, A., Mohr, J. J., Biviano, A., Bocquet, S., Strazzullo, V., Grandis, S., Applegate, D. E., Bayliss, M. B., Benson, B. A., Bleem, L. E., Brodwin, M., Bulbul, E., Carlstrom, J. E., Chiu, I., Dietrich, J. P., Gupta, N., de Haan, T., Hlavacek-Larrondo, J., Klein, M., von der Linden, A., McDonald, M., Rapetti, D., Reichardt, C. L., Sharon, K., Stalder, B., Stanford, S. A., Stark, A. A., Stern, C., and Zenteno, A. Mon . "Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3". United States. doi:10.1093/mnras/sty2645.
@article{osti_1479839,
title = {Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3},
author = {Capasso, R. and Saro, A. and Mohr, J. J. and Biviano, A. and Bocquet, S. and Strazzullo, V. and Grandis, S. and Applegate, D. E. and Bayliss, M. B. and Benson, B. A. and Bleem, L. E. and Brodwin, M. and Bulbul, E. and Carlstrom, J. E. and Chiu, I. and Dietrich, J. P. and Gupta, N. and de Haan, T. and Hlavacek-Larrondo, J. and Klein, M. and von der Linden, A. and McDonald, M. and Rapetti, D. and Reichardt, C. L. and Sharon, K. and Stalder, B. and Stanford, S. A. and Stark, A. A. and Stern, C. and Zenteno, A.},
abstractNote = {The galaxy phase-space distribution in galaxy clusters provides insights into the formation and evolution of cluster galaxies, and it can also be used to measure cluster mass profiles. We present a dynamical study based on $\sim$3000 passive, non-emission line cluster galaxies drawn from 110 galaxy clusters. The galaxy clusters were selected using the Sunyaev-Zel'dovich effect (SZE) in the 2500~deg$^2$ SPT-SZ survey and cover the redshift range $0.2 < z < 1.3$. We model the clusters using the Jeans equation, while adopting NFW mass profiles and a broad range of velocity dispersion anisotropy profiles. The data prefer velocity dispersion anisotropy profiles that are approximately isotropic near the center and increasingly radial toward the cluster virial radius, and this is true for all redshifts and masses we study. The pseudo-phase-space density profile of the passive galaxies is consistent with expectations for dark matter particles and subhalos from cosmological $N$-body simulations. The dynamical mass constraints are in good agreement with external mass estimates of the SPT cluster sample from either weak lensing, velocity dispersions, or X-ray $Y_X$ measurements. However, the dynamical masses are lower (at the 2.2$\sigma$ level) when compared to the mass calibration favored when fitting the SPT cluster data to a $\Lambda$CDM model with external cosmological priors, including CMB anisotropy data from Planck. The discrepancy grows with redshift, where in the highest redshift bin the ratio of dynamical to SPT+Planck masses is $\eta=0.63^{+0.13}_{-0.08}\pm0.06$ (statistical and systematic), corresponding to a $2.6\sigma$ discrepancy.},
doi = {10.1093/mnras/sty2645},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 482,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1093/mnras/sty2645

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