Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pasj...48..565m&link_type=abstract
Publications of the Astronomical Society of Japan, v.48, p.565-571.
Astronomy and Astrophysics
Astronomy
16
Galaxies: Abundances, Galaxies: Clusters Of, Galaxies: Individual (Ophiuchus Cluster), Galaxies: X-Rays, X-Rays: Sources
Scientific paper
We report on the first result concerning the Ophiuchus cluster of galaxies observed with ASCA during the performance-verification phase. The obtained image in the energy range of 0.7--10 keV is nearly circular, and the peak of the X-ray surface brightness is coincident with the position of the cD galaxy. We analyzed the ASCA GIS data within a 13.8' radius of the cluster center while considering the energy-dependent flux-contaminated effect due to ASCA X-ray telescope. This data can be well explained with the isothermal beta model, in which the density profile is expressed with a beta profile of r_core=3.8' and beta =0.62, and the temperature and metal abundances are constant at kT=9.8 keV and Z=0.24 Z_solar . The central excess density profile obtained with Einstein HRI is also consistent with the ASCA GIS data.
Ikebe Yasushi
Matsuoka Masaru
Matsuzawa Hideyuki
Mihara Tatehiro
Yamashita Koujun
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