Mass Modeling of Frontier Fields Cluster MACS J1149.5+2223 Using Strong and Weak Lensing
Mass Modeling of Frontier Fields Cluster MACS J1149.5+2223 Using Strong and Weak Lensing
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使用强透镜和弱透镜对前沿场簇 MACS J1149.5 2223 进行质量建模
DOI:
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
C. Mason
中科院分区:
文献类型:
--
作者:
E. Finney;M. Bradavc;Kuang;A. Hoag;T. Morishita;T. Schrabback;T. Treu;K. Schmidt;B. Lemaux;Xin Wang;C. Mason
We present a gravitational-lensing model of MACS J1149.5+2223 using ultra-deep Hubble Frontier Fields imaging data and spectroscopic redshifts from HST grism and Very Large Telescope (VLT)/MUSE spectroscopic data. We create total mass maps using 38 multiple images (13 sources) and 608 weak-lensing galaxies, as well as 100 multiple images of 31 star-forming regions in the galaxy that hosts supernova Refsdal. We find good agreement with a range of recent models within the HST field of view. We present a map of the ratio of projected stellar mass to total mass (f⋆) and find that the stellar mass fraction for this cluster peaks on the primary BCG. Averaging within a radius of 0.3 Mpc, we obtain a value of , consistent with other recent results for this ratio in cluster environments, though with a large global error (up to δf⋆ = 0.005) primarily due to the choice of IMF. We compare values of f⋆ and measures of star formation efficiency for this cluster to other Hubble Frontier Fields clusters studied in the literature, finding that MACS1149 has a higher stellar mass fraction than these other clusters but a star formation efficiency typical of massive clusters.
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DOI:
10.1111/j.1365-2966.2009.15034.x
发表时间:
2008-08
影响因子:
4.8
作者:
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通讯作者:
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影响因子:
4.8
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DOI:
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发表时间:
2011-06
期刊:
The Astrophysical Journal Supplement Series
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2016
期刊:
ArXiv e-prints
影响因子:
--
作者:
Mason Charlotte A.
通讯作者:
Mason Charlotte A.