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

Zhang, Y., Jeltema, T., Hollowood, D. L., Everett, S., Rozo, E., Farahi, A., et al. (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. doi:10.1093/mnras/stz1361.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-E495-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-E496-1
Genre: Journal Article

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Zhang, Y., Author
Jeltema, T., Author
Hollowood, D. L., Author
Everett, S., Author
Rozo, E., Author
Farahi, A., Author
Bermeo, A., Author
Bhargava, S., Author
Giles, P., Author
Romer, A. K., Author
Wilkinson, R., Author
Rykoff, E. S., Author
Mantz, A., Author
Diehl, H. T., Author
Evrard, A. E., Author
Stern, C., Author
Gruen, D., Author
von der Linden, A., Author
Splettstoesser, M., Author
Chen, X., Author
Costanzi, M., AuthorAllen, S., AuthorCollins, C., AuthorHilton, M., AuthorKlein, M.1, Author              Mann, R. G., AuthorManolopoulou, M., AuthorMorris, G., AuthorMayers, J., AuthorSahlen, M., AuthorStott, J., AuthorVergara Cervantes, C. , AuthorViana, P. T. P., AuthorWechsler, R. H., AuthorAllam, S., AuthorAvila, S., AuthorBechtol, K., AuthorBertin, E., AuthorBrooks, D., AuthorBurke, D. L., AuthorCarnero Rosell, A. , AuthorCarrasco Kind, M. , AuthorCarretero, J., AuthorCastander, F. J., Authorda Costa, L. N., AuthorDe Vicente, J. , AuthorDesai, S., AuthorDietrich, J. P., AuthorDoel, P., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcía-Bellido, J., AuthorGaztanaga, E., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHonscheid, K., AuthorHoyle, B.2, Author              Krause, E., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLima, M., AuthorMaia, M. A. G., AuthorMarshall, J. L., AuthorMelchior, P., AuthorMenanteau, F., AuthorMiller, C. J., AuthorMiquel, R., AuthorOgando, R. L. C., AuthorPlazas, A. A., AuthorSanchez, E., AuthorScarpine, V., AuthorSchindler, R., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSmith, M., AuthorSoares-Santos, M., AuthorSuchyta, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorThomas, D., AuthorTucker, D. L., AuthorVikram, V., AuthorWester, W., Author more..
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 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.

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 Dates: 2019-05-16
 Publication Status: Published online
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz1361
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 487 (2) Sequence Number: - Start / End Page: 2578 - 2593 Identifier: ISSN: 1365-2966
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150