1999ApJ...527L..25D -
Astrophys. J., 527, L25-L29 (1999/December-2)
A BEPPOSAX observation of the merging cluster Abell 3266.
DE GRANDI S. and MOLENDI S.
Abstract (from CDS):
We present results from a BeppoSAX observation of the rich cluster Abell 3266. The broadband spectrum (2-50 keV) of the cluster, when fitted with an optically thin thermal emission model, yields a temperature of 8.1±0.2 keV and a metal abundance of 0.17±0.02 in solar units, with no evidence of a hard X-ray excess in the Phoswich Detector System spectrum. By performing a spatially resolved spectral analysis, we find that the projected temperature drops with increasing radius, going from ∼10 keV at the cluster core to ∼5 keV at about 1.5 Mpc. Our BeppoSAX temperature profile is in good agreement with the ASCA temperature profile of Markevitch et al. From our two-dimensional temperature map, we find that the gradient is observed in all azimuthal directions. The temperature gradient may have been caused by a recent merger event that was also responsible for a velocity-dispersion gradient measured in the optical band. The projected metal abundance profile and the two-dimensional map are both consistent with being constant.
Abstract Copyright:
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Journal keyword(s):
Galaxies: Clusters: Individual: Name: Abell 3266 - X-Rays: Galaxies
Simbad objects:
1
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