AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters

Yu-Wei Liao; Jiun-Huei Proty Wu; Paul T. P. Ho; Chih-Wei Locutus Huang; Patrick M. Koch; Kai-Yang Lin; Guo-Chin Liu; Sandor M. Molnar; Hiroaki Nishioka; Keiichi Umetsu; Fu-Cheng Wang; Pablo Altamirano; Mark Birkinshaw; Chia-Hao Chang; Shu-Hao Chang; Su-Wei Chang; Ming-Tang Chen; Tzihong Chiueh; Chih-Chiang Han; Yau-De Huang; Yuh-Jing Hwang; Homin Jiang; Michael Kesteven; Derek Kubo; Chao-Te Li; Pierre Martin-Cocher; Peter Oshiro; Philippe Raffin; Tashun Wei; Warwick Wilson

doi:10.1088/0004-637x/713/1/584

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arXiv · 1003.0496

AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters

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Abstract

The Sunyaev-Zel'dovich Effect (SZE) has been observed toward six massive galaxy clusters, at redshifts 0.091 \leq z \leq 0.322 in the 86-102 GHz band with the Y. T. Lee Array for Microwave Background Anisotropy (AMiBA). We modify an iterative method, based on the isothermal β-models, to derive the electron temperature T_e, total mass M_t, gas mass M_g, and integrated Compton Y within r_2500, from the AMiBA SZE data. Non-isothermal universal temperature profile (UTP) βmodels are also considered in this paper. These results are in good agreement with those deduced from other observations. We also investigate the embedded scaling relations, due to the assumptions that have been made in the method we adopted, between these purely SZE-deduced T_e, M_t, M_g and Y. Our results suggest that cluster properties may be measurable with SZE observations alone. However, the assumptions built into the pure-SZE method bias the results of scaling relation estimations and need further study.

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Yu-Wei Liao, Jiun-Huei Proty Wu, Paul T. P. Ho, Chih-Wei Locutus Huang, Patrick M. Koch, Kai-Yang Lin, Guo-Chin Liu, Sandor M. Molnar, Hiroaki Nishioka, Keiichi Umetsu, Fu-Cheng Wang, Pablo Altamirano, Mark Birkinshaw, Chia-Hao Chang, Shu-Hao Chang, Su-Wei Chang, Ming-Tang Chen, Tzihong Chiueh, Chih-Chiang Han, Yau-De Huang, Yuh-Jing Hwang, Homin Jiang, Michael Kesteven, Derek Kubo, Chao-Te Li, Pierre Martin-Cocher, Peter Oshiro, Philippe Raffin, Tashun Wei, Warwick Wilson. 2010-03-02. AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters. https://doi.org/10.1088/0004-637x%2F713%2F1%2F584

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