Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254...51a&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Jan. 1, 1992, p. 51-58. Research supported by Roya
Astronomy and Astrophysics
Astrophysics
45
Galactic Clusters, Ginga Satellite, Intergalactic Media, Spaceborne Astronomy, X Ray Astronomy, X Ray Sources, Astronomical Models, Cooling Flows (Astrophysics), Exosat Satellite, Japanese Spacecraft, Metallicity, Temperature Distribution
Scientific paper
Observations of the Perseus cluster of galaxies made using the Ginga and Exosat satellites are reported. Data from the Ginga satellite indicate that the region around the centrally dominant galaxy NGC 1275 is well described by a model incorporating emission from an isothermal, diffuse plasma with temperature of about 6.3 keV, metal abundance of about 0.4 solar, a cooling flow with a mass deposition rate of about 270 solar masses/yr, and photoelectric absorption from a galactic column density of 1.3 x 10 exp 21 atom/sq cm. No evidence is found for a significant power-law component from the active nucleus of NGC 1275. A systematic series of pointings made with Ginga reveals no evidence for a radial dependence of metal abundance but does indicate a possibility of some large-scale temperature variation.
Allen Steven W.
Edge Alastair C.
Fabian Andrea C.
Johnstone R. M.
Nulsen Paul E. J.
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