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Title: Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data

Abstract

We measure the weak lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey (DES). This pathfinder study is meant to (1) validate the Dark Energy Camera (DECam) imager for the task of measuring weak lensing shapes, and (2) utilize DECam's large field of view to map out the clusters and their environments over 90 arcmin. We conduct a series of rigorous tests on astrometry, photometry, image quality, point spread function (PSF) modelling, and shear measurement accuracy to single out flaws in the data and also to identify the optimal data processing steps and parameters. We find Science Verification data from DECam to be suitable for the lensing analysis described in this paper. The PSF is generally well behaved, but the modelling is rendered difficult by a flux-dependent PSF width and ellipticity. We employ photometric redshifts to distinguish between foreground and background galaxies, and a red-sequence cluster finder to provide cluster richness estimates and cluster-galaxy distributions. By fitting Navarro-Frenk-White profiles to the clusters in this study, we determine weak lensing masses that are in agreement with previous work. For Abell 3261, we provide the first estimates of redshift, weakmore » lensing mass, and richness. In addition, the cluster-galaxy distributions indicate the presence of filamentary structures attached to 1E 0657-56 and RXC J2248.7-4431, stretching out as far as 1. (approximately 20 Mpc), showcasing the potential of DECam and DES for detailed studies of degree-scale features on the sky.« less

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); United Kingdom Science and Technology Facilities Council
OSTI Identifier:
1342909
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 449; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology: observations; galaxies: clusters: individual: 1E 0657−56; galaxies: clusters: individual: Abell 3261; galaxies: clusters: individual: RXC J2248.7−4431; galaxies: clusters: individual: SCSO J233227−535827; gravitational lensing: weak

Citation Formats

Melchior, P., Suchyta, E., Huff, E., Hirsch, M., Kacprzak, T., Rykoff, E., Gruen, D., Armstrong, R., Bacon, D., Bechtol, K., Bernstein, G. M., Bridle, S., Clampitt, J., Honscheid, K., Jain, B., Jouvel, S., Krause, E., Lin, H., MacCrann, N., Patton, K., Plazas, A., Rowe, B., Vikram, V., Wilcox, H., Young, J., Zuntz, J., Abbott, T., Abdalla, F. B., Allam, S. S., Banerji, M., Bernstein, J. P., Bernstein, R. A., Bertin, E., Buckley-Geer, E., Burke, D. L., Castander, F. J., da Costa, L. N., Cunha, C. E., Depoy, D. L., Desai, S., Diehl, H. T., Doel, P., Estrada, J., Evrard, A. E., Neto, A. F., Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J. A., Gaztanaga, E., Gerdes, D., Gruendl, R. A., Gutierrez, G. R., Jarvis, M., Karliner, I., Kent, S., Kuehn, K., Kuropatkin, N., Lahav, O., Maia, M. A. G., Makler, M., Marriner, J., Marshall, J. L., Merritt, K. W., Miller, C. J., Miquel, R., Mohr, J., Neilsen, E., Nichol, R. C., Nord, B. D., Reil, K., Roe, N. A., Roodman, A., Sako, M., Sanchez, E., Santiago, B. X., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Sheldon, E., Smith, C., Soares-Santos, M., Swanson, M. E. C., Sypniewski, A. J., Tarle, G., Thaler, J., Thomas, D., Tucker, D. L., Walker, A., Wechsler, R., Weller, J., and Wester, W. Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data. United States: N. p., 2015. Web. doi:10.1093/mnras/stv398.
Melchior, P., Suchyta, E., Huff, E., Hirsch, M., Kacprzak, T., Rykoff, E., Gruen, D., Armstrong, R., Bacon, D., Bechtol, K., Bernstein, G. M., Bridle, S., Clampitt, J., Honscheid, K., Jain, B., Jouvel, S., Krause, E., Lin, H., MacCrann, N., Patton, K., Plazas, A., Rowe, B., Vikram, V., Wilcox, H., Young, J., Zuntz, J., Abbott, T., Abdalla, F. B., Allam, S. S., Banerji, M., Bernstein, J. P., Bernstein, R. A., Bertin, E., Buckley-Geer, E., Burke, D. L., Castander, F. J., da Costa, L. N., Cunha, C. E., Depoy, D. L., Desai, S., Diehl, H. T., Doel, P., Estrada, J., Evrard, A. E., Neto, A. F., Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J. A., Gaztanaga, E., Gerdes, D., Gruendl, R. A., Gutierrez, G. R., Jarvis, M., Karliner, I., Kent, S., Kuehn, K., Kuropatkin, N., Lahav, O., Maia, M. A. G., Makler, M., Marriner, J., Marshall, J. L., Merritt, K. W., Miller, C. J., Miquel, R., Mohr, J., Neilsen, E., Nichol, R. C., Nord, B. D., Reil, K., Roe, N. A., Roodman, A., Sako, M., Sanchez, E., Santiago, B. X., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Sheldon, E., Smith, C., Soares-Santos, M., Swanson, M. E. C., Sypniewski, A. J., Tarle, G., Thaler, J., Thomas, D., Tucker, D. L., Walker, A., Wechsler, R., Weller, J., & Wester, W. Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data. United States. doi:10.1093/mnras/stv398.
Melchior, P., Suchyta, E., Huff, E., Hirsch, M., Kacprzak, T., Rykoff, E., Gruen, D., Armstrong, R., Bacon, D., Bechtol, K., Bernstein, G. M., Bridle, S., Clampitt, J., Honscheid, K., Jain, B., Jouvel, S., Krause, E., Lin, H., MacCrann, N., Patton, K., Plazas, A., Rowe, B., Vikram, V., Wilcox, H., Young, J., Zuntz, J., Abbott, T., Abdalla, F. B., Allam, S. S., Banerji, M., Bernstein, J. P., Bernstein, R. A., Bertin, E., Buckley-Geer, E., Burke, D. L., Castander, F. J., da Costa, L. N., Cunha, C. E., Depoy, D. L., Desai, S., Diehl, H. T., Doel, P., Estrada, J., Evrard, A. E., Neto, A. F., Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J. A., Gaztanaga, E., Gerdes, D., Gruendl, R. A., Gutierrez, G. R., Jarvis, M., Karliner, I., Kent, S., Kuehn, K., Kuropatkin, N., Lahav, O., Maia, M. A. G., Makler, M., Marriner, J., Marshall, J. L., Merritt, K. W., Miller, C. J., Miquel, R., Mohr, J., Neilsen, E., Nichol, R. C., Nord, B. D., Reil, K., Roe, N. A., Roodman, A., Sako, M., Sanchez, E., Santiago, B. X., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Sheldon, E., Smith, C., Soares-Santos, M., Swanson, M. E. C., Sypniewski, A. J., Tarle, G., Thaler, J., Thomas, D., Tucker, D. L., Walker, A., Wechsler, R., Weller, J., and Wester, W. Tue . "Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data". United States. doi:10.1093/mnras/stv398.
@article{osti_1342909,
title = {Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data},
author = {Melchior, P. and Suchyta, E. and Huff, E. and Hirsch, M. and Kacprzak, T. and Rykoff, E. and Gruen, D. and Armstrong, R. and Bacon, D. and Bechtol, K. and Bernstein, G. M. and Bridle, S. and Clampitt, J. and Honscheid, K. and Jain, B. and Jouvel, S. and Krause, E. and Lin, H. and MacCrann, N. and Patton, K. and Plazas, A. and Rowe, B. and Vikram, V. and Wilcox, H. and Young, J. and Zuntz, J. and Abbott, T. and Abdalla, F. B. and Allam, S. S. and Banerji, M. and Bernstein, J. P. and Bernstein, R. A. and Bertin, E. and Buckley-Geer, E. and Burke, D. L. and Castander, F. J. and da Costa, L. N. and Cunha, C. E. and Depoy, D. L. and Desai, S. and Diehl, H. T. and Doel, P. and Estrada, J. and Evrard, A. E. and Neto, A. F. and Fernandez, E. and Finley, D. A. and Flaugher, B. and Frieman, J. A. and Gaztanaga, E. and Gerdes, D. and Gruendl, R. A. and Gutierrez, G. R. and Jarvis, M. and Karliner, I. and Kent, S. and Kuehn, K. and Kuropatkin, N. and Lahav, O. and Maia, M. A. G. and Makler, M. and Marriner, J. and Marshall, J. L. and Merritt, K. W. and Miller, C. J. and Miquel, R. and Mohr, J. and Neilsen, E. and Nichol, R. C. and Nord, B. D. and Reil, K. and Roe, N. A. and Roodman, A. and Sako, M. and Sanchez, E. and Santiago, B. X. and Schindler, R. and Schubnell, M. and Sevilla-Noarbe, I. and Sheldon, E. and Smith, C. and Soares-Santos, M. and Swanson, M. E. C. and Sypniewski, A. J. and Tarle, G. and Thaler, J. and Thomas, D. and Tucker, D. L. and Walker, A. and Wechsler, R. and Weller, J. and Wester, W.},
abstractNote = {We measure the weak lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey (DES). This pathfinder study is meant to (1) validate the Dark Energy Camera (DECam) imager for the task of measuring weak lensing shapes, and (2) utilize DECam's large field of view to map out the clusters and their environments over 90 arcmin. We conduct a series of rigorous tests on astrometry, photometry, image quality, point spread function (PSF) modelling, and shear measurement accuracy to single out flaws in the data and also to identify the optimal data processing steps and parameters. We find Science Verification data from DECam to be suitable for the lensing analysis described in this paper. The PSF is generally well behaved, but the modelling is rendered difficult by a flux-dependent PSF width and ellipticity. We employ photometric redshifts to distinguish between foreground and background galaxies, and a red-sequence cluster finder to provide cluster richness estimates and cluster-galaxy distributions. By fitting Navarro-Frenk-White profiles to the clusters in this study, we determine weak lensing masses that are in agreement with previous work. For Abell 3261, we provide the first estimates of redshift, weak lensing mass, and richness. In addition, the cluster-galaxy distributions indicate the presence of filamentary structures attached to 1E 0657-56 and RXC J2248.7-4431, stretching out as far as 1. (approximately 20 Mpc), showcasing the potential of DECam and DES for detailed studies of degree-scale features on the sky.},
doi = {10.1093/mnras/stv398},
journal = {Monthly Notices of the Royal Astronomical Society},
issn = {0035-8711},
number = 3,
volume = 449,
place = {United States},
year = {2015},
month = {3}
}

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