Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

DES Collaboration; Y. Zhang; T. Jeltema; D. L. Hollowood; S. Everett; E. Rozo; A. Farahi; A. Bermeo; S. Bhargava; P. Giles; A. K. Romer; R. Wilkinson; E. S. Rykoff; A. Mantz; H. T. Diehl; A. E. Evrard; C. Stern; D. Gruen; A. von der Linden; M. Splettstoesser; X. Chen; M. Costanzi; S. Allen; C. Collins; M. Hilton; M. Klein; R. G. Mann; M. Manolopoulou; G. Morris; J. Mayers; M. Sahlen; J. Stott; C. Vergara Cervantes; P. T. P. Viana; R. H. Wechsler; S. Allam; S. Avila; K. Bechtol; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; L. N. da Costa; J. De Vicente; S. Desai; J. P. Dietrich; P. Doel; B. Flaugher; P. Fosalba; J. Frieman; J. García-Bellido; E. Gaztanaga; R. A. Gruendl; J. Gschwend; G. Gutierrez; W. G. Hartley; K. Honscheid; B. Hoyle; E. Krause; K. Kuehn; N. Kuropatkin; M. Lima; M. A. G. Maia; J. L. Marshall; P. Melchior; F. Menanteau; C. J. Miller; R. Miquel; R. L. C. Ogando; A. A. Plazas; E. Sanchez; V. Scarpine; R. Schindler; S. Serrano; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Thomas; D. L. Tucker; V. Vikram; W. Wester

doi:10.1093/mnras/stz1361

Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

DES Collaboration, Y. Zhang, T. Jeltema, D. L. Hollowood, S. Everett, E. Rozo, A. Farahi, A. Bermeo, S. Bhargava, P. Giles, A. K. Romer, R. Wilkinson, E. S. Rykoff, A. Mantz, H. T. Diehl, A. E. Evrard, C. Stern, D. Gruen, A. von der Linden, M. SplettstoesserX. Chen, M. Costanzi, S. Allen, C. Collins, M. Hilton, M. Klein, R. G. Mann, M. Manolopoulou, G. Morris, J. Mayers, M. Sahlen, J. Stott, C. Vergara Cervantes, P. T. P. Viana, R. H. Wechsler, S. Allam, S. Avila, K. Bechtol, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, L. N. da Costa, J. De Vicente, S. Desai, J. P. Dietrich, P. Doel, B. Flaugher, P. Fosalba, J. Frieman, J. García-Bellido, E. Gaztanaga, R. A. Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, K. Honscheid, B. Hoyle, E. Krause, K. Kuehn, N. Kuropatkin, M. Lima, M. A. G. Maia, J. L. Marshall, P. Melchior, F. Menanteau, C. J. Miller, R. Miquel, R. L. C. Ogando, A. A. Plazas, E. Sanchez, V. Scarpine, R. Schindler, S. Serrano, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, D. L. Tucker, V. Vikram, W. Wester

Australian Astronomical Optics

Research output: Contribution to journal › Article › peer-review

Abstract

The centre determination of a galaxy cluster from an optical cluster finding algorithm can be offset from theoretical prescriptions or N-body definitions of its host halo centre. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centring performance of the redMaPPer cluster finding algorithm using archival X-ray observations of redMaPPer-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centres, and through analysing their offsets to the redMaPPer centres, we find that ∼75 ± 8 per cent of the redMaPPer clusters are well centred and the mis-centred offset follows a Gamma distribution in normalized, projected distance. These mis-centring offsets cause a systematic underestimation of cluster richness relative to the well-centred clusters, for which we propose a descriptive model. Our results enable the DES Y1 cluster cosmology analysis by characterizing the necessary corrections to both the weak lensing and richness abundance functions of the DES Y1 redMaPPer cluster catalogue.

Original language	English
Pages (from-to)	2578-2593
Number of pages	16
Journal	Monthly Notices of the Royal Astronomical Society
Volume	487
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stz1361
Publication status	Published - Aug 2019

Keywords

galaxies: clusters: general
dark energy
X-rays: galaxies: clusters

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10.1093/mnras/stz1361

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DES Collaboration, Zhang, Y., Jeltema, T., Hollowood, D. L., Everett, S., Rozo, E., Farahi, A., Bermeo, A., Bhargava, S., Giles, P., Romer, A. K., Wilkinson, R., Rykoff, E. S., Mantz, A., Diehl, H. T., Evrard, A. E., Stern, C., Gruen, D., von der Linden, A., ... Wester, W. (2019). Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues. Monthly Notices of the Royal Astronomical Society, 487(2), 2578-2593. https://doi.org/10.1093/mnras/stz1361

@article{4efd54d863f24a9d99158e22b0e8a5db,

title = "Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues",

abstract = "The centre determination of a galaxy cluster from an optical cluster finding algorithm can be offset from theoretical prescriptions or N-body definitions of its host halo centre. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centring performance of the redMaPPer cluster finding algorithm using archival X-ray observations of redMaPPer-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centres, and through analysing their offsets to the redMaPPer centres, we find that ∼75 ± 8 per cent of the redMaPPer clusters are well centred and the mis-centred offset follows a Gamma distribution in normalized, projected distance. These mis-centring offsets cause a systematic underestimation of cluster richness relative to the well-centred clusters, for which we propose a descriptive model. Our results enable the DES Y1 cluster cosmology analysis by characterizing the necessary corrections to both the weak lensing and richness abundance functions of the DES Y1 redMaPPer cluster catalogue.",

keywords = "galaxies: clusters: general, dark energy, X-rays: galaxies: clusters",

author = "{DES Collaboration} and Y. Zhang and T. Jeltema and Hollowood, {D. L.} and S. Everett and E. Rozo and A. Farahi and A. Bermeo and S. Bhargava and P. Giles and Romer, {A. K.} and R. Wilkinson and Rykoff, {E. S.} and A. Mantz and Diehl, {H. T.} and Evrard, {A. E.} and C. Stern and D. Gruen and {von der Linden}, A. and M. Splettstoesser and X. Chen and M. Costanzi and S. Allen and C. Collins and M. Hilton and M. Klein and Mann, {R. G.} and M. Manolopoulou and G. Morris and J. Mayers and M. Sahlen and J. Stott and Cervantes, {C. Vergara} and Viana, {P. T. P.} and Wechsler, {R. H.} and S. Allam and S. Avila and K. Bechtol and E. Bertin and D. Brooks and Burke, {D. L.} and Rosell, {A. Carnero} and Kind, {M. Carrasco} and J. Carretero and Castander, {F. J.} and {da Costa}, {L. N.} and {De Vicente}, J. and S. Desai and Dietrich, {J. P.} and P. Doel and B. Flaugher and P. Fosalba and J. Frieman and J. Garc{\'i}a-Bellido and E. Gaztanaga and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hartley, {W. G.} and K. Honscheid and B. Hoyle and E. Krause and K. Kuehn and N. Kuropatkin and M. Lima and Maia, {M. A. G.} and Marshall, {J. L.} and P. Melchior and F. Menanteau and Miller, {C. J.} and R. Miquel and Ogando, {R. L. C.} and Plazas, {A. A.} and E. Sanchez and V. Scarpine and R. Schindler and S. Serrano and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and E. Suchyta and Swanson, {M. E. C.} and G. Tarle and D. Thomas and Tucker, {D. L.} and V. Vikram and W. Wester",

year = "2019",

month = aug,

doi = "10.1093/mnras/stz1361",

language = "English",

volume = "487",

pages = "2578--2593",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

DES Collaboration, Zhang, Y, Jeltema, T, Hollowood, DL, Everett, S, Rozo, E, Farahi, A, Bermeo, A, Bhargava, S, Giles, P, Romer, AK, Wilkinson, R, Rykoff, ES, Mantz, A, Diehl, HT, Evrard, AE, Stern, C, Gruen, D, von der Linden, A, Splettstoesser, M, Chen, X, Costanzi, M, Allen, S, Collins, C, Hilton, M, Klein, M, Mann, RG, Manolopoulou, M, Morris, G, Mayers, J, Sahlen, M, Stott, J, Cervantes, CV, Viana, PTP, Wechsler, RH, Allam, S, Avila, S, Bechtol, K, Bertin, E, Brooks, D, Burke, DL, Rosell, AC, Kind, MC, Carretero, J, Castander, FJ, da Costa, LN, De Vicente, J, Desai, S, Dietrich, JP, Doel, P, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gaztanaga, E, Gruendl, RA, Gschwend, J, Gutierrez, G, Hartley, WG, Honscheid, K, Hoyle, B, Krause, E, Kuehn, K, Kuropatkin, N, Lima, M, Maia, MAG, Marshall, JL, Melchior, P, Menanteau, F, Miller, CJ, Miquel, R, Ogando, RLC, Plazas, AA, Sanchez, E, Scarpine, V, Schindler, R, Serrano, S, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Tucker, DL, Vikram, V & Wester, W 2019, 'Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues', Monthly Notices of the Royal Astronomical Society, vol. 487, no. 2, pp. 2578-2593. https://doi.org/10.1093/mnras/stz1361

TY - JOUR

T1 - Dark Energy Surveyed Year 1 results

T2 - calibration of cluster mis-centring in the redMaPPer catalogues

AU - DES Collaboration

AU - Zhang, Y.

AU - Jeltema, T.

AU - Hollowood, D. L.

AU - Everett, S.

AU - Rozo, E.

AU - Farahi, A.

AU - Bermeo, A.

AU - Bhargava, S.

AU - Giles, P.

AU - Romer, A. K.

AU - Wilkinson, R.

AU - Rykoff, E. S.

AU - Mantz, A.

AU - Diehl, H. T.

AU - Evrard, A. E.

AU - Stern, C.

AU - Gruen, D.

AU - von der Linden, A.

AU - Splettstoesser, M.

AU - Chen, X.

AU - Costanzi, M.

AU - Allen, S.

AU - Collins, C.

AU - Hilton, M.

AU - Klein, M.

AU - Mann, R. G.

AU - Manolopoulou, M.

AU - Morris, G.

AU - Mayers, J.

AU - Sahlen, M.

AU - Stott, J.

AU - Cervantes, C. Vergara

AU - Viana, P. T. P.

AU - Wechsler, R. H.

AU - Allam, S.

AU - Avila, S.

AU - Bechtol, K.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Rosell, A. Carnero

AU - Kind, M. Carrasco

AU - Carretero, J.

AU - Castander, F. J.

AU - da Costa, L. N.

AU - De Vicente, J.

AU - Desai, S.

AU - Dietrich, J. P.

AU - Doel, P.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Honscheid, K.

AU - Hoyle, B.

AU - Krause, E.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lima, M.

AU - Maia, M. A. G.

AU - Marshall, J. L.

AU - Melchior, P.

AU - Menanteau, F.

AU - Miller, C. J.

AU - Miquel, R.

AU - Ogando, R. L. C.

AU - Plazas, A. A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schindler, R.

AU - Serrano, S.

AU - Sevilla-Noarbe, I.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Suchyta, E.

AU - Swanson, M. E. C.

AU - Tarle, G.

AU - Thomas, D.

AU - Tucker, D. L.

AU - Vikram, V.

AU - Wester, W.

PY - 2019/8

Y1 - 2019/8

N2 - The centre determination of a galaxy cluster from an optical cluster finding algorithm can be offset from theoretical prescriptions or N-body definitions of its host halo centre. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centring performance of the redMaPPer cluster finding algorithm using archival X-ray observations of redMaPPer-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centres, and through analysing their offsets to the redMaPPer centres, we find that ∼75 ± 8 per cent of the redMaPPer clusters are well centred and the mis-centred offset follows a Gamma distribution in normalized, projected distance. These mis-centring offsets cause a systematic underestimation of cluster richness relative to the well-centred clusters, for which we propose a descriptive model. Our results enable the DES Y1 cluster cosmology analysis by characterizing the necessary corrections to both the weak lensing and richness abundance functions of the DES Y1 redMaPPer cluster catalogue.

AB - The centre determination of a galaxy cluster from an optical cluster finding algorithm can be offset from theoretical prescriptions or N-body definitions of its host halo centre. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centring performance of the redMaPPer cluster finding algorithm using archival X-ray observations of redMaPPer-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centres, and through analysing their offsets to the redMaPPer centres, we find that ∼75 ± 8 per cent of the redMaPPer clusters are well centred and the mis-centred offset follows a Gamma distribution in normalized, projected distance. These mis-centring offsets cause a systematic underestimation of cluster richness relative to the well-centred clusters, for which we propose a descriptive model. Our results enable the DES Y1 cluster cosmology analysis by characterizing the necessary corrections to both the weak lensing and richness abundance functions of the DES Y1 redMaPPer cluster catalogue.

KW - galaxies: clusters: general

KW - dark energy

KW - X-rays: galaxies: clusters

U2 - 10.1093/mnras/stz1361

DO - 10.1093/mnras/stz1361

M3 - Article

SN - 0035-8711

VL - 487

SP - 2578

EP - 2593

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

Abstract

Keywords

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