SEARCHING FOR FOSSIL EVIDENCE OF AGN FEEDBACK IN WISE-SELECTED STRIPE-82 GALAXIES BY MEASURING THE THERMAL SUNYAEV–ZEL’DOVICH EFFECT WITH THE ATACAMA COSMOLOGY TELESCOPE
SEARCHING FOR FOSSIL EVIDENCE OF AGN FEEDBACK IN WISE-SELECTED STRIPE-82 GALAXIES BY MEASURING THE THERMAL SUNYAEV–ZEL’DOVICH EFFECT WITH THE ATACAMA COSMOLOGY TELESCOPE
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通过使用阿塔卡马宇宙学望远镜测量热 SUNYAEV-ZELDOVICH 效应，在明智选择的 STRIPE-82 星系中寻找 AGN 反馈的化石证据
DOI：
10.3847/1538-4357/834/2/102
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
P. Mauskopf
中科院分区：
文献类型：
--
作者：
A. Špaček;E. Scannapieco;S. Cohen;B. Joshi;P. Mauskopf
我们通过热Sunyaev-Zel'dovich（tSZ）效应直接测量星系周围气体的热能。我们对阿塔卡玛宇宙望远镜的微波背景图像进行了叠加分析，其中包括1179个0.5 ≤ z ≤ 1.0（“低z”）的大质量静止椭圆星系和3274个1.0 ≤ z ≤ 1.5的星系（“高Z”），使用来自宽视场红外巡天探测器全天巡天和斯隆数字巡天（SDSS）条纹-82领域内的数据进行选择。这些星系周围的气体预计包含来自过去活动星系核（AGN）反馈的能量，在使用建模减去未检测到的污染物后，我们检测到tSZ信号，对于我们的低z星系和高z星系的显著性分别为0.9 σ和1.8 σ。然后，我们包括从227个低z星系和529个高z星系的子集的高频普朗克带的数据，发现低z和高z的tSZ检测1.0 σ和1.5 σ，分别。这些结果表明，低z星系周围的平均热加热为（5.6 − 5.6 + 5.9）× 10 60 erg，高z星系为（7.0 − 4.4 + 4.7）× 10 60 erg。基于简单的加热模型，这些结果是一致的重力加热没有额外的加热由于AGN反馈。
We directly measure the thermal energy of the gas surrounding galaxies through the thermal Sunyaev–Zel’dovich (tSZ) effect. We perform a stacking analysis of microwave background images from the Atacama Cosmology Telescope, around 1179 massive quiescent elliptical galaxies at 0.5 ≤ z ≤ 1.0 (“low-z”) and 3274 galaxies at 1.0 ≤ z ≤ 1.5 (“high-z”), selected using data from the Wide-field Infrared Survey Explorer All-Sky Survey and the Sloan Digital Sky Survey (SDSS) within the SDSS Stripe-82 field. The gas surrounding these galaxies is expected to contain energy from past episodes of active galactic nucleus (AGN) feedback, and after using modeling to subtract undetected contaminants, we detect a tSZ signal at a significance of 0.9 σ for our low-z galaxies and 1.8 σ for our high-z galaxies. We then include data from the high-frequency Planck bands for a subset of 227 low-z galaxies and 529 high-z galaxies and find low-z and high-z tSZ detections of 1.0 σ and 1.5 σ , respectively. These results indicate an average thermal heating around these galaxies of ( 5.6 − 5.6 + 5.9 ) × 10 60 erg for our low-z galaxies and ( 7.0 − 4.4 + 4.7 ) × 10 60 erg for our high-z galaxies. Based on simple heating models, these results are consistent with gravitational heating without additional heating due to AGN feedback.
长蛇座 A 星系团的大规模激波
影响因子：
6.5
作者：
Simionescu;Roediger;Nulsen;P. E. J;Brüggen;Forman;Böhringer;H.Werner;Finoguenov
通讯作者：
Finoguenov
影响因子：
4.9
作者：
Eisenhardt, Peter R. M.;Wu, Jingwen;Yan, Lin
通讯作者：
Yan, Lin