HEAO 1 identification of the X-ray emitting poor cluster of galaxies, AWM 7

Details HEAO 1 identification of the X-ray emitting poor cluster of galaxies, AWM 7 HEAO 1 identification of the X-ray emitting poor cluster of galaxies, AWM 7

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238l..53s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 238, June 1, 1980, p. L53-L58.

Astronomy and Astrophysics

Astronomy

27

Emission Spectra, Galactic Clusters, X Ray Sources, X Ray Spectra, Bremsstrahlung, Heao 1, Position (Location), Spaceborne Astronomy, Stellar Temperature

Scientific paper

The X-ray source 2A 0251 + 413 is identified with the AWM 7 group of galaxies. The source is extended, with a FWHM of roughly 9 arcmin if an isothermal sphere profile is assumed. The spectrum is best fitted by thermal bremsstrahlung at 4.0 + or - 0.5 keV, with a significant Fe line emission of equivalent width 0.63 keV centered at 6.6 keV. This temperature is consistent with a measured dispersion velocity of 600 km/s of the central galaxies.

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