SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas

Details SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412..489k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 412, no. 2, p. 489-503.

Astronomy and Astrophysics

Astronomy

25

Cosmic Gases, Galactic Clusters, Metallicity, Spaceborne Astronomy, Spartan Satellites, X Ray Astronomy, Intergalactic Media, Iron

Scientific paper

The Spartan 1 instrument has resolved the spatial and spectral distribution of the 1-10 keV X-ray emission from the Perseus cluster in a region extending 50 arcmin from the center. The data were fitted with a spherically symmetric three-dimensional model which included separate components for the cooling flow, the extended cluster emission, and a possible point source located at NGC 1275. A careful study has been made of the abundance distribution of iron as a function of radius. We confirm the existence of a gradient where the best-fit central abundance is 0.77 + 0.30 of - 0.38 times the solar value and the linear gradient is -1.10 + 0.89 or - 2.24 per Mpc (90 percent confidence for a single interesting parameter in both cases). Joint 90 percent confidence limits to the abundance parameters have been established, and the resulting limits to the abundance distribution have been applied to theoretical models of cluster structure and evolution. We find that our results are consistent with a gas-removal mechanism with enhanced efficiency at the cluster center such as ram-pressure stripping or thermal exaporation. Our results are also in agreement with cluster evolution models in which the initial density of primordial gas in the cluster formation region is high (not less than 10 exp 28 g/cu cm).

Affiliated with

Also associated with

No associations

Rating

SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas 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 SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SPARTAN 1 X-ray observations of the Perseus cluster. III - The distribution of iron in the intracluster gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1490990