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Title: Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey

Abstract

We study the Sunyaev-Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 deg$^2$ of the Dark Energy Survey (DES) science verification data, detecting a stacked SZE signal down to richness $$\lambda\sim20$$. The SZE signature is measured using matched-filtered maps of the 2500 deg$^2$ SPT-SZ survey at the positions of the DES clusters, and the degeneracy between SZE observable and matched-filter size is broken by adopting as priors SZE and optical mass-observable relations that are either calibrated using SPT selected clusters or through the Arnaud et al. (2010, A10) X-ray analysis. We measure the SPT signal to noise $$\zeta$$-$$\lambda$$, relation and two integrated Compton-$y$ $$Y_\textrm{500}$$-$$\lambda$$ relations for the DES-selected clusters and compare these to model expectations accounting for the SZE-optical center offset distribution. For clusters with $$\lambda > 80$$, the two SPT calibrated scaling relations are consistent with the measurements, while for the A10-calibrated relation the measured SZE signal is smaller by a factor of $$0.61 \pm 0.12$$ compared to the prediction. For clusters at $$20 < \lambda < 80$$, the measured SZE signal is smaller by a factor of $$\sim$$0.20-0.80 (between 2.3 and 10~$$\sigma$$ significance) compared to the prediction, with the SPT calibrated scaling relations and larger $$\lambda$$ clusters showing generally better agreement. We quantify the required corrections to achieve consistency, showing that there is a richness dependent bias that can be explained by some combination of contamination of the observables and biases in the estimated masses. We discuss possible physical effects, as contamination from line-of-sight projections or from point sources, larger offsets in the SZE-optical centering or larger scatter in the $$\lambda$$-mass relation at lower richnesses.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); SLAC National Accelerator Lab., Menlo Park, 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.:
DES
OSTI Identifier:
1369256
Alternate Identifier(s):
OSTI ID: 1294435
Report Number(s):
DES-2014-0015; FERMILAB-PUB-16-132-E; arXiv:1605.08770
Journal ID: ISSN 0035-8711; 1466121
Grant/Contract Number:
AC02-07CH11359; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 468; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; methods: observational; methods: statistical; galaxies: abundances; galaxies: clusters: general; large-scale structure of Universe

Citation Formats

Saro, A., Bocquet, S., Mohr, J., Rozo, E., Benson, B. A., Dodelson, S., Rykoff, E. S., Bleem, L., Abbott, T. M. C., Abdalla, F. B., Allen, S., Annis, J., Benoit-Lévy, A., Brooks, D., Burke, D. L., Capasso, R., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Chiu, I., Crawford, T. M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Dietrich, J. P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gangkofner, C., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Grandis, S., Gruen, D., Gruendl, R. A., Gupta, N., Gutierrez, G., Holzapfel, W. L., James, D. J., Kuehn, K., Kuropatkin, N., Lima, M., Marshall, J. L., McDonald, M., Melchior, P., Menanteau, F., Miquel, R., Ogando, R., Plazas, A. A., Rapetti, D., Reichardt, C. L., Reil, K., Romer, A. K., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Soergel, B., Strazzullo, V., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Vikram, V., Walker, A. R., and Zenteno, A.. Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey. United States: N. p., 2017. Web. doi:10.1093/mnras/stx594.
Saro, A., Bocquet, S., Mohr, J., Rozo, E., Benson, B. A., Dodelson, S., Rykoff, E. S., Bleem, L., Abbott, T. M. C., Abdalla, F. B., Allen, S., Annis, J., Benoit-Lévy, A., Brooks, D., Burke, D. L., Capasso, R., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Chiu, I., Crawford, T. M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Dietrich, J. P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gangkofner, C., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Grandis, S., Gruen, D., Gruendl, R. A., Gupta, N., Gutierrez, G., Holzapfel, W. L., James, D. J., Kuehn, K., Kuropatkin, N., Lima, M., Marshall, J. L., McDonald, M., Melchior, P., Menanteau, F., Miquel, R., Ogando, R., Plazas, A. A., Rapetti, D., Reichardt, C. L., Reil, K., Romer, A. K., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Soergel, B., Strazzullo, V., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Vikram, V., Walker, A. R., & Zenteno, A.. Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey. United States. doi:10.1093/mnras/stx594.
Saro, A., Bocquet, S., Mohr, J., Rozo, E., Benson, B. A., Dodelson, S., Rykoff, E. S., Bleem, L., Abbott, T. M. C., Abdalla, F. B., Allen, S., Annis, J., Benoit-Lévy, A., Brooks, D., Burke, D. L., Capasso, R., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Chiu, I., Crawford, T. M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Dietrich, J. P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gangkofner, C., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Grandis, S., Gruen, D., Gruendl, R. A., Gupta, N., Gutierrez, G., Holzapfel, W. L., James, D. J., Kuehn, K., Kuropatkin, N., Lima, M., Marshall, J. L., McDonald, M., Melchior, P., Menanteau, F., Miquel, R., Ogando, R., Plazas, A. A., Rapetti, D., Reichardt, C. L., Reil, K., Romer, A. K., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Soergel, B., Strazzullo, V., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Vikram, V., Walker, A. R., and Zenteno, A.. Wed . "Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey". United States. doi:10.1093/mnras/stx594. https://www.osti.gov/servlets/purl/1369256.
@article{osti_1369256,
title = {Optical–SZE scaling relations for DES optically selected clusters within the SPT-SZ Survey},
author = {Saro, A. and Bocquet, S. and Mohr, J. and Rozo, E. and Benson, B. A. and Dodelson, S. and Rykoff, E. S. and Bleem, L. and Abbott, T. M. C. and Abdalla, F. B. and Allen, S. and Annis, J. and Benoit-Lévy, A. and Brooks, D. and Burke, D. L. and Capasso, R. and Carnero Rosell, A. and Carrasco Kind, M. and Carretero, J. and Chiu, I. and Crawford, T. M. and Cunha, C. E. and D'Andrea, C. B. and da Costa, L. N. and Desai, S. and Dietrich, J. P. and Evrard, A. E. and Neto, A. Fausti and Flaugher, B. and Fosalba, P. and Frieman, J. and Gangkofner, C. and Gaztanaga, E. and Gerdes, D. W. and Giannantonio, T. and Grandis, S. and Gruen, D. and Gruendl, R. A. and Gupta, N. and Gutierrez, G. and Holzapfel, W. L. and James, D. J. and Kuehn, K. and Kuropatkin, N. and Lima, M. and Marshall, J. L. and McDonald, M. and Melchior, P. and Menanteau, F. and Miquel, R. and Ogando, R. and Plazas, A. A. and Rapetti, D. and Reichardt, C. L. and Reil, K. and Romer, A. K. and Sanchez, E. and Scarpine, V. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, R. C. and Soares-Santos, M. and Soergel, B. and Strazzullo, V. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thomas, D. and Vikram, V. and Walker, A. R. and Zenteno, A.},
abstractNote = {We study the Sunyaev-Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 deg$^2$ of the Dark Energy Survey (DES) science verification data, detecting a stacked SZE signal down to richness $\lambda\sim20$. The SZE signature is measured using matched-filtered maps of the 2500 deg$^2$ SPT-SZ survey at the positions of the DES clusters, and the degeneracy between SZE observable and matched-filter size is broken by adopting as priors SZE and optical mass-observable relations that are either calibrated using SPT selected clusters or through the Arnaud et al. (2010, A10) X-ray analysis. We measure the SPT signal to noise $\zeta$-$\lambda$, relation and two integrated Compton-$y$ $Y_\textrm{500}$-$\lambda$ relations for the DES-selected clusters and compare these to model expectations accounting for the SZE-optical center offset distribution. For clusters with $\lambda > 80$, the two SPT calibrated scaling relations are consistent with the measurements, while for the A10-calibrated relation the measured SZE signal is smaller by a factor of $0.61 \pm 0.12$ compared to the prediction. For clusters at $20 < \lambda < 80$, the measured SZE signal is smaller by a factor of $\sim$0.20-0.80 (between 2.3 and 10~$\sigma$ significance) compared to the prediction, with the SPT calibrated scaling relations and larger $\lambda$ clusters showing generally better agreement. We quantify the required corrections to achieve consistency, showing that there is a richness dependent bias that can be explained by some combination of contamination of the observables and biases in the estimated masses. We discuss possible physical effects, as contamination from line-of-sight projections or from point sources, larger offsets in the SZE-optical centering or larger scatter in the $\lambda$-mass relation at lower richnesses.},
doi = {10.1093/mnras/stx594},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 468,
place = {United States},
year = {Wed Mar 15 00:00:00 EDT 2017},
month = {Wed Mar 15 00:00:00 EDT 2017}
}

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  • We study the Sunyaev-Zel'dovich effect (SZE) signature in South Pole Telescope (SPT) data for an ensemble of 719 optically identified galaxy clusters selected from 124.6 degmore » $^2$ of the Dark Energy Survey (DES) science verification data, detecting a stacked SZE signal down to richness $$\lambda\sim20$$. The SZE signature is measured using matched-filtered maps of the 2500 deg$^2$ SPT-SZ survey at the positions of the DES clusters, and the degeneracy between SZE observable and matched-filter size is broken by adopting as priors SZE and optical mass-observable relations that are either calibrated using SPT selected clusters or through the Arnaud et al. (2010, A10) X-ray analysis. We measure the SPT signal to noise $$\zeta$$-$$\lambda$$, relation and two integrated Compton-$y$ $$Y_\textrm{500}$$-$$\lambda$$ relations for the DES-selected clusters and compare these to model expectations accounting for the SZE-optical center offset distribution. For clusters with $$\lambda > 80$$, the two SPT calibrated scaling relations are consistent with the measurements, while for the A10-calibrated relation the measured SZE signal is smaller by a factor of $$0.61 \pm 0.12$$ compared to the prediction. For clusters at $$20 < \lambda < 80$$, the measured SZE signal is smaller by a factor of $$\sim$$0.20-0.80 (between 2.3 and 10~$$\sigma$$ significance) compared to the prediction, with the SPT calibrated scaling relations and larger $$\lambda$$ clusters showing generally better agreement. We quantify the required corrections to achieve consistency, showing that there is a richness dependent bias that can be explained by some combination of contamination of the observables and biases in the estimated masses. We discuss possible physical effects, as contamination from line-of-sight projections or from point sources, larger offsets in the SZE-optical centering or larger scatter in the $$\lambda$$-mass relation at lower richnesses.« less
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