Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-07-24
Astronomy and Astrophysics
Astrophysics
LaTeX file, 14 pages, 3 encapsulated PostScript figures. Uses aaspp4.sty and astrobib.sty. (Astrobib is available from http:
Scientific paper
10.1086/310271
We have searched the far-UV spectra of five clusters of galaxies observed with the Hopkins Ultraviolet Telescope (HUT) for emission in the resonance lines of O VI (1032,1038 A) and C IV (1548,1551 A). We do not detect significant emission from either species in any of the spectra. Lieu et al. [ApJ, 458, L5 (1996)] have recently proposed a warm [(5-10) * 10^5 K] component to the intracluster medium (ICM) to explain the excess 0.065-0.245 keV flux present in EUVE and ROSAT observations of the Virgo cluster. If the surface brightness of this warm component follows that of the hot, x-ray-emitting gas (i.e., is centrally condensed), then our upper limit to the O VI surface brightness in M87 is inconsistent with the presence of substantial 500,000 K gas in the center of the Virgo cluster. This inconsistency may be alleviated if the central gas temperature is >= 750,000 K. HUT limits on the O VI surface brightness of the four other clusters can provide important constraints on models of their ICM.
Dyke Dixon Van W.
Ferguson Henry C.
Hurwitz Mark
No associations
LandOfFree
Limits on Far-UV Emission from Warm Gas in Clusters of Galaxies with the Hopkins Ultraviolet Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Limits on Far-UV Emission from Warm Gas in Clusters of Galaxies with the Hopkins Ultraviolet Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limits on Far-UV Emission from Warm Gas in Clusters of Galaxies with the Hopkins Ultraviolet Telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-151138