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Detection of X-ray emission from distant clusters of galaxiesThe paper reports the first extensive detection of X-ray emission from clusters of galaxies at cosmological distances. The properties of these objects are similar to those observed in objects at low redshifts. The 0.5-4.5 keV luminosities are in the range of less than 1 x 10 to the 43rd to 2 x 10 to the 45th ergs/s; the core radii are on the order of 0.5 Mpc; and Bautz-Morgan type I clusters are more luminous than types II or III. The observations are consistent with models assuming an evolving cluster potential and moderately efficient galaxy formation, but do not require them when observational selection is considered. X-ray observations of the 3C 295 cluster indicate that there is sufficient intergalactic medium to cause stripping of the cluster spirals, but the colors of these galaxies imply that they have not been stripped. A possible explanation of this discrepancy is discussed.
Document ID
19800053992
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Henry, J. P.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Branduardi, G.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Fabricant, D.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Feigelson, E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Murray, S.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Tananbaum, H.
(Harvard-Smithsonian Center for Astrophysics Cambridge, Mass., United States)
Briel, U.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.; Max-Planck-Institut fuer extraterrestrische Physik Garching, Germany)
Soltan, A.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.; Polska Akademia Nauk, Centrum Astronomiczne Warsaw, Poland)
Date Acquired
August 10, 2013
Publication Date
November 15, 1979
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
80A38162
Funding Number(s)
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Other

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