CFHTLenS: the relation between galaxy dark matter haloes and baryons from weak gravitational lensing

CFHTLenS: the relation between galaxy dark matter haloes and baryons from weak gravitational lensing
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CFHTLenS:弱引力透镜效应下的星系暗物质晕和重子之间的关系

DOI:
10.1093/mnras/stt2013
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发表时间:
2013-04
影响因子:
4.8
通讯作者:
Semboloni, Elisabetta
Semboloni, Elisabetta
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Van Waerbeke, Ludovic;Bonnett, Christopher;Fu, Liping;Giodini, Stefania;Hudson, Michael J.;Kuijken, Konrad;Rowe, Barnaby;Schrabback, Tim;Semboloni, Elisabetta

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本文研究了暗物质晕质量与宿主星系重子含量之间的关系,并通过星系光度和恒星质量进行了量化。我们的调查使用154度2的加拿大-法国-夏威夷望远镜透镜巡天(CFHTLenS)的透镜和测光数据,从CFHT遗产调查。为了解释我们的星系周围的弱透镜信号,我们采用了星系-星系透镜晕模型,使我们能够约束晕质量和卫星分数。我们的分析仅限于红移在0.2和0.4之间的透镜,分为红色和蓝色样品。我们将暗物质晕质量和重子观测值之间的关系表示为一个以10 11 h −2为支点的幂律
We present a study of the relation between dark matter halo mass and the baryonic content of their host galaxies, quantified through galaxy luminosit y and stellar mass. Our investigation uses 154deg 2 of Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) lensing and photometric data, obtained from the CFHT Legacy Survey. To interpret the weak lensing signal around our galaxies we employ a galaxy-galaxy lensing halo model which allows us to constrain the halo mass and the satellite fraction . Our analysis is limited to lenses at redshifts between 0.2 and 0.4, split into a red and a blue sa mple. We express the relationship between dark matter halo mass and baryonic observable as a power law with pivot points of 10 11 h −2
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