Detection of X-ray emission from distant clusters of galaxies

Journal Article · Thu Nov 15 04:00:00 EST 1979 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183101· OSTI ID:5731229

Henry, J P; Branduardi, G; Briel, U; Fabricant, D; Feigelson, E; Murray, S; Soltan, A; Tananbaum, H

We report the first extensive detection of X-ray emission from clusters of galsxies 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 <1 x 10/sup 43/ to 2 x 10/sup 45/ ergs s/sup -1/; 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. Our 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.Our 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. We discuss a possible explanation of this discrepancy.

• Research Organization: Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts
• OSTI ID: 5731229
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 234:1; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics &amp; Cosmology-- Quasi-Stellar
Radio
&amp; X-Ray Sources-- (-1987)
640105 -- Astrophysics &amp; Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
GALACTIC EVOLUTION
GALAXY CLUSTERS
INTERGALACTIC SPACE
LUMINOSITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RED SHIFT
SPACE
SPECTRA
X-RAY SPECTRA