The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters

C. Zhou; A. Tong; M. A. Troxel; J. Blazek; C. Lin; D. Bacon; L. Bleem; C. Chang; M. Costanzi; J. DeRose; J. P. Dietrich; A. Drlica-Wagner; D. Gruen; R. A. Gruendl; B. Hoyle; M. Jarvis; N. MacCrann; B. Mawdsley; T. McClintock; P. Melchior; J. Prat; A. Pujol; E. Rozo; E. S. Rykoff; S. Samuroff; E. Sheldon; T. Shin; A. Carnero Rosell; B. Yanny; C. Sánchez; D. L. Tucker; I. Sevilla-Noarbe; J. Zuntz; T. N. Varga; Y. Zhang; O. Alves; A. Amon; E. Bertin; D. Brooks; D. L. Burke; M. Carrasco Kind; L. N. da Costa; T. M. Davis; J. De Vicente; S. Desai; H. T. Diehl; P. Doel; S. Everett; I. Ferrero; B. Flaugher; J. Frieman; D. W. Gerdes; G. Gutierrez; S. R. Hinton; D. L. Hollowood; K. Honscheid; D. J. James; T. Jeltema; K. Kuehn; O. Lahav; M. Lima; J. L. Marshall; J. Mena-Fernández; F. Menanteau; R. Miquel; A. Palmese; F. Paz-Chinchón; A. Pieres; A. A.Plazas Malagón; A. Porredon; M. Raveri; A. K. Romer; E. Sanchez; M. Smith; M. Soares-Santos; E. Suchyta; M. E.C. Swanson; G. Tarle; C. To; N. Weaverdyck; J. Weller; P. Wiseman

doi:10.1093/mnras/stad2712

The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters

C. Zhou, A. Tong, M. A. Troxel, J. Blazek, C. Lin, D. Bacon, L. Bleem, C. Chang, M. Costanzi, J. DeRose, J. P. Dietrich, A. Drlica-Wagner, D. Gruen, R. A. Gruendl, B. Hoyle, M. Jarvis, N. MacCrann, B. Mawdsley, T. McClintock, P. MelchiorJ. Prat, A. Pujol, E. Rozo, E. S. Rykoff, S. Samuroff, E. Sheldon, T. Shin, A. Carnero Rosell, B. Yanny, C. Sánchez, D. L. Tucker, I. Sevilla-Noarbe, J. Zuntz, T. N. Varga, Y. Zhang, O. Alves, A. Amon, E. Bertin, D. Brooks, D. L. Burke, M. Carrasco Kind, L. N. da Costa, T. M. Davis, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, B. Flaugher, J. Frieman, D. W. Gerdes, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, T. Jeltema, K. Kuehn, O. Lahav, M. Lima, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, A. Palmese, F. Paz-Chinchón, A. Pieres, A. A.Plazas Malagón, A. Porredon, M. Raveri, A. K. Romer, E. Sanchez, M. Smith, M. Soares-Santos, E. Suchyta, M. E.C. Swanson, G. Tarle, C. To, N. Weaverdyck, J. Weller, P. Wiseman

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Abstract

Clusters of galaxies trace the most non-linear peaks in the cosmic density field. The weak gravitational lensing of background galaxies by clusters can allow us to infer their masses. However, galaxies associated with the local environment of the cluster can also be intrinsically aligned due to the local tidal gradient, contaminating any cosmology derived from the lensing signal. We measure this intrinsic alignment in Dark Energy Survey (DES) Year 1 REDMAPPER clusters. We find evidence of a non-zero mean radial alignment of galaxies within clusters between redshifts 0.1–0.7. We find a significant systematic in the measured ellipticities of cluster satellite galaxies that we attribute to the central galaxy flux and other intracluster light. We attempt to correct this signal, and fit a simple model for intrinsic alignment amplitude (A_IA) to the measurement, finding A_IA = 0.15 ± 0.04, when excluding data near the edge of the cluster. We find a significantly stronger alignment of the central galaxy with the cluster dark matter halo at low redshift and with higher richness and central galaxy absolute magnitude (proxies for cluster mass). This is an important demonstration of the ability of large photometric data sets like DES to provide direct constraints on the intrinsic alignment of galaxies within clusters. These measurements can inform improvements to small-scale modelling and simulation of the intrinsic alignment of galaxies to help improve the separation of the intrinsic alignment signal in weak lensing studies.

Original language	English
Pages (from-to)	323-336
Number of pages	14
Journal	Monthly Notices of the Royal Astronomical Society
Volume	526
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stad2712
State	Published - Nov 1 2023

Funding

MT is supported by DOE Award SC0000253548. JB is supported by NSF Award AST-2206563. We acknowledge use of the lux supercomputer at UC Santa Cruz, funded by NSF MRI grant AST 1828315. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda\u00E7\u00E3o Carlos Chagas Filho de Amparo \u00E0 Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico and the Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Inova\u00E7\u00E3o, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energ\u00E9ticas, Medioambientales y Tecnol\u00F3gicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgen\u00F6ssische Technische Hochschule (ETH) Z\u00FCrich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ci\u00E8ncies de l\u2019Espai (IEEC/CSIC), the Institut de F\u00EDsica d\u2019Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universit\u00E4t M\u00FCnchen and the associated Excellence Cluster Universe, the University of Michigan, NFS\u2019s NOIRLab, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium. Based in part on observations at Cerro Tololo Inter-American Observatory at NSF\u2019s NOIRLab (NOIRLab Prop. ID 2012B-0001; PI: J. Frieman), which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Programme (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci\u00EAncia e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Programme (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci\u00EAncia e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). MT is supported by DOE Award SC0000253548. JB is supported by NSF Award AST-2206563. We acknowledge use of the lux supercomputer at UC Santa Cruz, funded by NSF MRI grant AST 1828315. This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. Based in part on observations at Cerro Tololo Inter-American Observatory at NSF\u2019s NOIRLab (NOIRLab Prop. ID 2012B-0001; PI: J. Frieman), which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation.

Keywords

cosmology: observations
galaxies: clusters: general
gravitational lensing: weak

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10.1093/mnras/stad2712

Cite this

Zhou, C., Tong, A., Troxel, M. A., Blazek, J., Lin, C., Bacon, D., Bleem, L., Chang, C., Costanzi, M., DeRose, J., Dietrich, J. P., Drlica-Wagner, A., Gruen, D., Gruendl, R. A., Hoyle, B., Jarvis, M., MacCrann, N., Mawdsley, B., McClintock, T., ... Wiseman, P. (2023). The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters. Monthly Notices of the Royal Astronomical Society, 526(1), 323-336. https://doi.org/10.1093/mnras/stad2712

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title = "The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters",

abstract = "Clusters of galaxies trace the most non-linear peaks in the cosmic density field. The weak gravitational lensing of background galaxies by clusters can allow us to infer their masses. However, galaxies associated with the local environment of the cluster can also be intrinsically aligned due to the local tidal gradient, contaminating any cosmology derived from the lensing signal. We measure this intrinsic alignment in Dark Energy Survey (DES) Year 1 REDMAPPER clusters. We find evidence of a non-zero mean radial alignment of galaxies within clusters between redshifts 0.1–0.7. We find a significant systematic in the measured ellipticities of cluster satellite galaxies that we attribute to the central galaxy flux and other intracluster light. We attempt to correct this signal, and fit a simple model for intrinsic alignment amplitude (AIA) to the measurement, finding AIA = 0.15 ± 0.04, when excluding data near the edge of the cluster. We find a significantly stronger alignment of the central galaxy with the cluster dark matter halo at low redshift and with higher richness and central galaxy absolute magnitude (proxies for cluster mass). This is an important demonstration of the ability of large photometric data sets like DES to provide direct constraints on the intrinsic alignment of galaxies within clusters. These measurements can inform improvements to small-scale modelling and simulation of the intrinsic alignment of galaxies to help improve the separation of the intrinsic alignment signal in weak lensing studies.",

keywords = "cosmology: observations, galaxies: clusters: general, gravitational lensing: weak",

author = "C. Zhou and A. Tong and Troxel, {M. A.} and J. Blazek and C. Lin and D. Bacon and L. Bleem and C. Chang and M. Costanzi and J. DeRose and Dietrich, {J. P.} and A. Drlica-Wagner and D. Gruen and Gruendl, {R. A.} and B. Hoyle and M. Jarvis and N. MacCrann and B. Mawdsley and T. McClintock and P. Melchior and J. Prat and A. Pujol and E. Rozo and Rykoff, {E. S.} and S. Samuroff and E. Sheldon and T. Shin and Rosell, {A. Carnero} and B. Yanny and C. S{\'a}nchez and Tucker, {D. L.} and I. Sevilla-Noarbe and J. Zuntz and Varga, {T. N.} and Y. Zhang and O. Alves and A. Amon and E. Bertin and D. Brooks and Burke, {D. L.} and Kind, {M. Carrasco} and {da Costa}, {L. N.} and Davis, {T. M.} and {De Vicente}, J. and S. Desai and Diehl, {H. T.} and P. Doel and S. Everett and I. Ferrero and B. Flaugher and J. Frieman and Gerdes, {D. W.} and G. Gutierrez and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and James, {D. J.} and T. Jeltema and K. Kuehn and O. Lahav and M. Lima and Marshall, {J. L.} and J. Mena-Fern{\'a}ndez and F. Menanteau and R. Miquel and A. Palmese and F. Paz-Chinch{\'o}n and A. Pieres and Malag{\'o}n, {A. A.Plazas} and A. Porredon and M. Raveri and Romer, {A. K.} and E. Sanchez and M. Smith and M. Soares-Santos and E. Suchyta and Swanson, {M. E.C.} and G. Tarle and C. To and N. Weaverdyck and J. Weller and P. Wiseman",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2023",

month = nov,

day = "1",

doi = "10.1093/mnras/stad2712",

language = "English",

volume = "526",

pages = "323--336",

journal = "Monthly Notices of the Royal Astronomical Society",

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Zhou, C, Tong, A, Troxel, MA, Blazek, J, Lin, C, Bacon, D, Bleem, L, Chang, C, Costanzi, M, DeRose, J, Dietrich, JP, Drlica-Wagner, A, Gruen, D, Gruendl, RA, Hoyle, B, Jarvis, M, MacCrann, N, Mawdsley, B, McClintock, T, Melchior, P, Prat, J, Pujol, A, Rozo, E, Rykoff, ES, Samuroff, S, Sheldon, E, Shin, T, Rosell, AC, Yanny, B, Sánchez, C, Tucker, DL, Sevilla-Noarbe, I, Zuntz, J, Varga, TN, Zhang, Y, Alves, O, Amon, A, Bertin, E, Brooks, D, Burke, DL, Kind, MC, da Costa, LN, Davis, TM, De Vicente, J, Desai, S, Diehl, HT, Doel, P, Everett, S, Ferrero, I, Flaugher, B, Frieman, J, Gerdes, DW, Gutierrez, G, Hinton, SR, Hollowood, DL, Honscheid, K, James, DJ, Jeltema, T, Kuehn, K, Lahav, O, Lima, M, Marshall, JL, Mena-Fernández, J, Menanteau, F, Miquel, R, Palmese, A, Paz-Chinchón, F, Pieres, A, Malagón, AAP, Porredon, A, Raveri, M, Romer, AK, Sanchez, E, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, MEC, Tarle, G, To, C, Weaverdyck, N, Weller, J & Wiseman, P 2023, 'The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters', Monthly Notices of the Royal Astronomical Society, vol. 526, no. 1, pp. 323-336. https://doi.org/10.1093/mnras/stad2712

TY - JOUR

T1 - The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters

AU - Zhou, C.

AU - Tong, A.

AU - Troxel, M. A.

AU - Blazek, J.

AU - Lin, C.

AU - Bacon, D.

AU - Bleem, L.

AU - Chang, C.

AU - Costanzi, M.

AU - DeRose, J.

AU - Dietrich, J. P.

AU - Drlica-Wagner, A.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Hoyle, B.

AU - Jarvis, M.

AU - MacCrann, N.

AU - Mawdsley, B.

AU - McClintock, T.

AU - Melchior, P.

AU - Prat, J.

AU - Pujol, A.

AU - Rozo, E.

AU - Rykoff, E. S.

AU - Samuroff, S.

AU - Sheldon, E.

AU - Shin, T.

AU - Rosell, A. Carnero

AU - Yanny, B.

AU - Sánchez, C.

AU - Tucker, D. L.

AU - Sevilla-Noarbe, I.

AU - Zuntz, J.

AU - Varga, T. N.

AU - Zhang, Y.

AU - Alves, O.

AU - Amon, A.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Kind, M. Carrasco

AU - da Costa, L. N.

AU - Davis, T. M.

AU - De Vicente, J.

AU - Desai, S.

AU - Diehl, H. T.

AU - Doel, P.

AU - Everett, S.

AU - Ferrero, I.

AU - Flaugher, B.

AU - Frieman, J.

AU - Gerdes, D. W.

AU - Gutierrez, G.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - James, D. J.

AU - Jeltema, T.

AU - Kuehn, K.

AU - Lahav, O.

AU - Lima, M.

AU - Marshall, J. L.

AU - Mena-Fernández, J.

AU - Menanteau, F.

AU - Miquel, R.

AU - Palmese, A.

AU - Paz-Chinchón, F.

AU - Pieres, A.

AU - Malagón, A. A.Plazas

AU - Porredon, A.

AU - Raveri, M.

AU - Romer, A. K.

AU - Sanchez, E.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - To, C.

AU - Weaverdyck, N.

AU - Weller, J.

AU - Wiseman, P.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - Clusters of galaxies trace the most non-linear peaks in the cosmic density field. The weak gravitational lensing of background galaxies by clusters can allow us to infer their masses. However, galaxies associated with the local environment of the cluster can also be intrinsically aligned due to the local tidal gradient, contaminating any cosmology derived from the lensing signal. We measure this intrinsic alignment in Dark Energy Survey (DES) Year 1 REDMAPPER clusters. We find evidence of a non-zero mean radial alignment of galaxies within clusters between redshifts 0.1–0.7. We find a significant systematic in the measured ellipticities of cluster satellite galaxies that we attribute to the central galaxy flux and other intracluster light. We attempt to correct this signal, and fit a simple model for intrinsic alignment amplitude (AIA) to the measurement, finding AIA = 0.15 ± 0.04, when excluding data near the edge of the cluster. We find a significantly stronger alignment of the central galaxy with the cluster dark matter halo at low redshift and with higher richness and central galaxy absolute magnitude (proxies for cluster mass). This is an important demonstration of the ability of large photometric data sets like DES to provide direct constraints on the intrinsic alignment of galaxies within clusters. These measurements can inform improvements to small-scale modelling and simulation of the intrinsic alignment of galaxies to help improve the separation of the intrinsic alignment signal in weak lensing studies.

AB - Clusters of galaxies trace the most non-linear peaks in the cosmic density field. The weak gravitational lensing of background galaxies by clusters can allow us to infer their masses. However, galaxies associated with the local environment of the cluster can also be intrinsically aligned due to the local tidal gradient, contaminating any cosmology derived from the lensing signal. We measure this intrinsic alignment in Dark Energy Survey (DES) Year 1 REDMAPPER clusters. We find evidence of a non-zero mean radial alignment of galaxies within clusters between redshifts 0.1–0.7. We find a significant systematic in the measured ellipticities of cluster satellite galaxies that we attribute to the central galaxy flux and other intracluster light. We attempt to correct this signal, and fit a simple model for intrinsic alignment amplitude (AIA) to the measurement, finding AIA = 0.15 ± 0.04, when excluding data near the edge of the cluster. We find a significantly stronger alignment of the central galaxy with the cluster dark matter halo at low redshift and with higher richness and central galaxy absolute magnitude (proxies for cluster mass). This is an important demonstration of the ability of large photometric data sets like DES to provide direct constraints on the intrinsic alignment of galaxies within clusters. These measurements can inform improvements to small-scale modelling and simulation of the intrinsic alignment of galaxies to help improve the separation of the intrinsic alignment signal in weak lensing studies.

KW - cosmology: observations

KW - galaxies: clusters: general

KW - gravitational lensing: weak

UR - http://www.scopus.com/inward/record.url?scp=85174295585&partnerID=8YFLogxK

U2 - 10.1093/mnras/stad2712

DO - 10.1093/mnras/stad2712

M3 - Article

AN - SCOPUS:85174295585

SN - 0035-8711

VL - 526

SP - 323

EP - 336

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

The intrinsic alignment of red galaxies in DES Y1 redMaPPer galaxy clusters

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