CLASH: The Concentration-Mass Relation of Galaxy Clusters
| Autor: | Merten, J., Meneghetti, M., Postman, M., Umetsu, K., Zitrin, A., Medezinski, E., Nonino, M., Koekemoer, A., Melchior, P., Gruen, D., Moustakas, L. A., Bartelmann, M., Host, O., Donahue, M., Coe, D., Molino, A., Jouvel, S., Monna, A., Seitz, S., Czakon, N., Lemze, D., Sayers, J., Balestra, I., Rosati, P., Benítez, N., Biviano, A., Bouwens, R., Bradley, L., Broadhurst, T., Carrasco, M., Ford, H., Grillo, C., Infante, L., Kelson, D., Lahav, O., Massey, R., Moustakas, J., Rasia, E., Rhodes, J., Vega, J., Zheng, W. |
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| Rok vydání: | 2014 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/806/1/4 |
| Popis: | We present a new determination of the concentration-mass relation for galaxy clusters based on our comprehensive lensing analysis of 19 X-ray selected galaxy clusters from the Cluster Lensing and Supernova Survey with Hubble (CLASH). Our sample spans a redshift range between 0.19 and 0.89. We combine weak lensing constraints from the Hubble Space Telescope (HST) and from ground-based wide field data with strong lensing constraints from HST. The result are reconstructions of the surface-mass density for all CLASH clusters on multi-scale grids. Our derivation of NFW parameters yields virial masses between 0.53 x 10^15 and 1.76 x 10^15 M_sol/h and the halo concentrations are distributed around c_200c ~ 3.7 with a 1-sigma significant negative trend with cluster mass. We find an excellent 4% agreement between our measured concentrations and the expectation from numerical simulations after accounting for the CLASH selection function based on X-ray morphology. The simulations are analyzed in 2D to account for possible biases in the lensing reconstructions due to projection effects. The theoretical concentration-mass (c-M) relation from our X-ray selected set of simulated clusters and the c-M relation derived directly from the CLASH data agree at the 90% confidence level. Comment: 24 pages, 15 figures and 10 tables. Submitted to ApJ. (Minor, non-scientific changes since ver1, added acknowledgement, added arXiv references to companion papers, fixed arXiv author list mistake.) |
| Databáze: | arXiv |
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