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 A Farahi, [et al.], (DES Collaboration), Mass variance from archival X-ray properties of Dark Energy Survey Year-1 galaxy clusters, Monthly Notices of the Royal Astronomical Society, Volume 490, Issue 3, December 2019, Pages 3341–3354, https://doi.org/10.1093/mnras/stz2689 is available online at: https://academic.oup.com/mnras/article/490/3/3341/5574403
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Mass variance from archival X-ray properties of Dark Energy Survey Year-1 galaxy clusters
AU - Farahi, A.
AU - Chen, X.
AU - Evrard, A.E.
AU - Hollowood, D.L.
AU - Wilkinson, R.
AU - Bhargava, S.
AU - Giles, P.
AU - Romer, A.K.
AU - Jeltema, T.
AU - Hilton, M.
AU - Bermeo, A.
AU - Mayers, J.
AU - Vergara Cervantes, C.
AU - Rozo, E.
AU - Rykoff, E.S.
AU - Collins, C.
AU - Costanzi, M.
AU - Everett, S.
AU - Liddle, A.R.
AU - Mann, R.G.
AU - Mantz, A.
AU - Rooney, P.
AU - Sahlen, M.
AU - Stott, J.
AU - Viana, P.T.P.
AU - Zhang, Y.
AU - Annis, J.
AU - Avila, S.
AU - Brooks, D.
AU - Buckley-Geer, E.
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 - Diehl, H.T.
AU - Dietrich, J.P.
AU - Doel, P.
AU - Flaugher, B.
AU - Fosalba, P.
AU - Frieman, J.
AU - García-Bellido, J.
AU - Gaztanaga, E.
AU - Gerdes, D.W.
AU - Gruen, D.
AU - Gruendl, R.A.
AU - Gschwend, J.
AU - Gutierrez, G.
AU - Honscheid, K.
AU - James, D.J.
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 - Miquel, R.
AU - Ogando, R.L.C.
AU - Plazas, A.A.
AU - Sanchez, E.
AU - Scarpine, V.
AU - Schubnell, M.
AU - Serrano, S.
AU - Sevilla-Noarbe, I.
AU - Smith, M.
AU - Sobreira, F.
AU - Suchyta, E.
AU - Swanson, M.E.C.
AU - Tarle, G.
AU - Thomas, D.
AU - Tucker, D.L.
AU - Vikram, V.
AU - Walker, A.R.
AU - Weller, J.
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 A Farahi, [et al.], (DES Collaboration), Mass variance from archival X-ray properties of Dark Energy Survey Year-1 galaxy clusters, Monthly Notices of the Royal Astronomical Society, Volume 490, Issue 3, December 2019, Pages 3341–3354, https://doi.org/10.1093/mnras/stz2689 is available online at: https://academic.oup.com/mnras/article/490/3/3341/5574403
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Using archival X-ray observations and a lognormal population model, we estimate constraints on the intrinsic scatter in halo mass at fixed optical richness for a galaxy cluster sample identified in Dark Energy Survey Year-One (DES-Y1) data with the redMaPPer algorithm. We examine the scaling behaviour of X-ray temperatures, T-X, with optical richness, lambda(RM), for clusters in the redshift range 0.2 50 per cent complete for clusters with lambda(RM) > 130. Regression analysis on the two samples produces consistent posterior scaling parameters, from which we derive a combined constraint on the residual scatter, sigma(ln) (T) (vertical bar) (lambda) = 0.275 +/- 0.019. Joined with constraints for T-X scaling with halo mass from the Weighing the Giants program and richness-temperature covariance estimates from the LoCuSS sample, we derive the richness-conditioned scatter in mass, sigma(ln) (M) (vertical bar) (lambda) = 0.30 +/- 0.04((stat)) +/- 0.09((sys)), at an optical richness of approximately 100. Uncertainties in external parameters, particularly the slope and variance of the T-X-mass relation and the covariance of T-X and lambda(RM) at fixed mass, dominate the systematic error. The 95 per cent confidence region from joint sample analysis is relatively broad, sigma(ln) (M) (vertical bar) (lambda) is an element of [0.14, 0.55], or a factor 10 in variance.
AB - Using archival X-ray observations and a lognormal population model, we estimate constraints on the intrinsic scatter in halo mass at fixed optical richness for a galaxy cluster sample identified in Dark Energy Survey Year-One (DES-Y1) data with the redMaPPer algorithm. We examine the scaling behaviour of X-ray temperatures, T-X, with optical richness, lambda(RM), for clusters in the redshift range 0.2 50 per cent complete for clusters with lambda(RM) > 130. Regression analysis on the two samples produces consistent posterior scaling parameters, from which we derive a combined constraint on the residual scatter, sigma(ln) (T) (vertical bar) (lambda) = 0.275 +/- 0.019. Joined with constraints for T-X scaling with halo mass from the Weighing the Giants program and richness-temperature covariance estimates from the LoCuSS sample, we derive the richness-conditioned scatter in mass, sigma(ln) (M) (vertical bar) (lambda) = 0.30 +/- 0.04((stat)) +/- 0.09((sys)), at an optical richness of approximately 100. Uncertainties in external parameters, particularly the slope and variance of the T-X-mass relation and the covariance of T-X and lambda(RM) at fixed mass, dominate the systematic error. The 95 per cent confidence region from joint sample analysis is relatively broad, sigma(ln) (M) (vertical bar) (lambda) is an element of [0.14, 0.55], or a factor 10 in variance.
KW - galaxies: clusters: general
KW - X-rays: galaxies: clusters
U2 - 10.1093/mnras/stz2689
DO - 10.1093/mnras/stz2689
M3 - Journal article
VL - 490
SP - 3341
EP - 3354
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 3
ER -