AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters
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 \beta-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) \beta models 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.
Cite
@article{arxiv.1003.0496,
title = {AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters},
author = {Yu-Wei Liao and Jiun-Huei Proty Wu and Paul T. P. Ho and Chih-Wei Locutus Huang and Patrick M. Koch and Kai-Yang Lin and Guo-Chin Liu and Sandor M. Molnar and Hiroaki Nishioka and Keiichi Umetsu and Fu-Cheng Wang and Pablo Altamirano and Mark Birkinshaw and Chia-Hao Chang and Shu-Hao Chang and Su-Wei Chang and Ming-Tang Chen and Tzihong Chiueh and Chih-Chiang Han and Yau-De Huang and Yuh-Jing Hwang and Homin Jiang and Michael Kesteven and Derek Kubo and Chao-Te Li and Pierre Martin-Cocher and Peter Oshiro and Philippe Raffin and Tashun Wei and Warwick Wilson},
journal= {arXiv preprint arXiv:1003.0496},
year = {2010}
}
Comments
Accepted by ApJ; 9 pages, 6 figures, 4 tables