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

We identify the X-ray source 2A 0251+413 with the AWM 7 group of galaxies. The source is extended, with a FWHM of roughly 9' if an isothermal sphere profile is assumed. The spectrum is best fitted by thermal bremsstrahlung at 4.0 +- 0.5 keV, with a significant Fe line emission of equivalent wid...

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Veröffentlicht in:	Astrophys. J., Lett. Ed.; (United States) Lett. Ed.; (United States), 1980-06, Vol.238, p.L53
Hauptverfasser:	Schwartz, D. A., Griffiths, R. E., Huchra, J., Tonry, J., Doxsey, R. E., Johnston, M. D., Mushotzky, R. F., Swank, J., Davis, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	640103 - Astrophysics & Cosmology- Quasi-Stellar, Radio, & X-Ray Sources- (-1987) CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC RAY SOURCES COSMIC X-RAY SOURCES DETECTION ELECTROMAGNETIC RADIATION EMISSION GALAXY CLUSTERS IONIZING RADIATIONS LUMINOSITY OPTICAL PROPERTIES PHYSICAL PROPERTIES RADIATION DETECTION RADIATIONS SPECTRA X RADIATION X-RAY SPECTRA
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Zusammenfassung:	We identify the X-ray source 2A 0251+413 with the AWM 7 group of galaxies. The source is extended, with a FWHM of roughly 9' if an isothermal sphere profile is assumed. The spectrum is best fitted by thermal bremsstrahlung at 4.0 +- 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 the measured dispersion velocity sigma/sub ..nu../=600 km s/sup -1/ of the center galaxies.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/183257