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Weak-lensing calibration of a stellar mass-based mass proxy for redMaPPer and Voronoi Tessellation clusters in SDSS Stripe 82

Pereira, MES; Soares-Santos, M; Makler, M; Annis, J; Lin, H; Palmese, A; Vitorelli, AZ; ... Shan, H; + view all (2018) Weak-lensing calibration of a stellar mass-based mass proxy for redMaPPer and Voronoi Tessellation clusters in SDSS Stripe 82. Monthly Notices of the Royal Astronomical Society , 474 (1) pp. 1361-1372. 10.1093/MNRAS/STX2831. Green open access

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Abstract

We present the firstweak lensing calibration of μ * , a newgalaxy cluster mass proxy corresponding to the total stellar mass of red and blue members, in two cluster samples selected from the SDSS Stripe 82 data: 230 red-sequence Matched-filter Probabilistic Percolation (redMaPPer) clusters at redshift 0.1 ≤ z < 0.33 and 136 Voronoi Tessellation (VT) clusters at 0.1 ≤ z < 0.6. We use the CS82 shear catalogue and stack the clusters in μ * bins to measure a mass-observable power-law relation. For redMaPPer clusters we obtain M 0 = (1.77 ± 0.36) × 10 14 h -1 M ⊙ , α =1.74 ± 0.62. For VT clusters, we find M 0 =(4.31 ± 0.89) × 10 14 h -1 M ⊙ , α =0.59 ± 0.54 and M 0 = (3.67 ± 0.56) × 10 14 h -1 M ⊙ , α = 0.68 ± 0.49 for a low and a high redshift bin, respectively. Our results are consistent, internally and with the literature, indicating that our method can be applied to any cluster-finding algorithm. In particular, we recommend that μ * be used as the mass proxy for VT clusters. Catalogues including μ * measurements will enable its use in studies of galaxy evolution in clusters and cluster cosmology.

Type: Article
Title: Weak-lensing calibration of a stellar mass-based mass proxy for redMaPPer and Voronoi Tessellation clusters in SDSS Stripe 82
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/MNRAS/STX2831
Publisher version: http://doi.org/10.1093/MNRAS/STX2831
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
URI: http://discovery.ucl.ac.uk/id/eprint/10048478
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