Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume 63, Issue 2, Pages 357-366Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pasj/63.2.357
Keywords
galaxies: clusters: individual (ZwCl 0823.2+0425); gravitational lensing; X-rays: galaxies: clusters
Categories
Funding
- Ministry of Education, Science, Sports, and Culture of Japan [19740096, 20740099]
- Ministry of Education, Science, Sports and Culture of Japan [18072001]
- NSERC Canada
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We present the results of a Suzaku X-ray follow-up observation of weak-lensing-detected halos in the field around galaxy cluster ZwCl 0823.2+0425. We clearly detected X-ray emission associated with most of these halos, and determined their detailed physical parameters, such as the X-ray luminosity, temperature, and metal abundance, for the first time. We found that the X-ray luminosity-temperature relation for these halos agrees with the former typical results. With the mass determined from the weak gravitational lensing data, the mass-temperature relation for them was also investigated, and was found to be consistent with the prediction from a simple self-similar model and the results of previous studies with both lensing and X-ray data. We would like to emphasize that the self-similar scaling relation of the mass and the temperature is shown here for the first time using a weak-lensing selected sample, whereas previous studies of the mass scaling relation used X-ray-selected samples of clusters. Therefore, our study demonstrates the importance of X-ray follow-up observations of shear-selected clusters, and shows that a joint X-ray and lensing analysis will be crucial for clusters discovered by the forthcoming weak-lensing surveys, such as the one planned with Subaru/Hyper-Suprime-Cam.
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