UNIFORMITY IN THE TEMPERATURE AND METALLICITY OF THE X-RAY EMITTING GAS IN THE ABELL-1060 CLUSTER OF GALAXIES

The results from ASCA observations of the Abell 1060 cluster of galaxi es are presented. Spatially sorted X-ray spectra were used to derive t he distributions of the temperature and metallicity in the X-ray emitt ing gas of the cluster. Within similar to 20' (or 400 kpc assuming H-0 = 50 km s(-1) Mpc(-1)) of the cluster center, the gas temperature has been found to be radially constant at 3.1(-0.5)(+0.3) keV (or 3.1 +/- 0.2 keV within similar to 10'), and the 2-10 keV luminosity was estim ated to be 2 x 10(43) erg s(-1). An upper limit on the cool emission c omponent at the cluster center was derived to be 6 x 10(41) erg s(-1) in 0.5-3 keV, assuming that it has a temperature of 1 keV. Although th e metallicity is consistent with being radially constant at 0.3 relati ve to solar value, the present observations do not constrain the abund ance well beyond 10', allowing values in the range from 0.2 to 0.4 sol ar value. There is some indication that O, Ne, and Si are more abundan t than Fe and Ni, when compared to the solar-abundance ratios. These r esults suggest the importance of galactic winds driven by type-II supe rnovae during the early phase of galaxy formation. In comparison with the Centaurus and Virgo clusters, discussions are made concerning the possible role of the cD galaxy in generating a metal concentration and a cool X-ray component at the cluster center.