Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Y Zhang, T Jeltema, [et. al.], (DES Collaboration), Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues, Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 2, August 2019, Pages 2578–2593, https://doi.org/10.1093/mnras/stz1361 is available online at: https://academic.oup.com/mnras/article/487/2/2578/5490401
Accepted author manuscript, 1.38 MB, PDF document
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1.38 MB, PDF document
Accepted author manuscript
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Dark Energy Surveyed Year 1 results
T2 - calibration of cluster mis-centring in the redMaPPer catalogues
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 - 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 - Vergara Cervantes, C.
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 - Carnero Rosell, A.
AU - Carrasco Kind, M.
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.
AU - DES Collaboration, null
N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Y Zhang, T Jeltema, [et. al.], (DES Collaboration), Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues, Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 2, August 2019, Pages 2578–2593, https://doi.org/10.1093/mnras/stz1361 is available online at: https://academic.oup.com/mnras/article/487/2/2578/5490401
PY - 2019/8/1
Y1 - 2019/8/1
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 - Journal article
VL - 487
SP - 2578
EP - 2593
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 2
ER -