ASCA observations of massive medium-distant clusters of galaxies. II.

¹ Center for Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, NE80, Cambridge, MA 02139-4307, USA
² CEA/DSM/DAPNIA, Service d'Astrophysique, 91191 Gif-sur-Yvette, France
³ Department of Physics, Faculty of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan

Corresponding author: H. Matsumoto, matumoto@space.mit.edu

Received: 25 August 2000
Accepted: 27 April 2001

Abstract

We have selected seven medium-distant clusters of galaxies (-0.3) for multi-wavelength observations with the goal of investigating their dynamical state. Following Paper I (Pierre et al. [CITE]) which reported the ASCA results about two of them, we present here the analysis of the ASCA observations of the other five clusters; RX J1023.8-2715 (A 3444), RX J1031.6-2607, RX J1050.5-0236 (A 1111), RX J1203.2-2131 (A 1451), and RX J1314.5-2517. Except for RX J1031.6, whose X-ray emission turned out to be dominated by an AGN, the ASCA spectra are well fitted by a one-temperature thin thermal plasma model. We compare the temperature-luminosity relation of our clusters with that of nearby ones (). Two clusters, RX J1050.5 and RX J1023.8, show larger luminosities than the bulk of clusters at similar temperatures, which suggests the presence of a cooling flow. The temperature vs. iron-abundance relationship of our sample is consistent with that of nearby clusters.