On the origin of extinction in the Coma cluster of galaxies.

Details On the origin of extinction in the Coma cluster of galaxies. On the origin of extinction in the Coma cluster of galaxies.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iaus..135p.353r&link_type=abstract

IAU Symposium No. 135: Interstellar dust: contributed papers, p. 353 - 356

Computer Science

Clusters Of Galaxies: Coma, Clusters Of Galaxies: Extinction, Clusters Of Galaxies: Intracluster Gas

Scientific paper

Visual extinction of distant clusters seen through the Coma cluster seem to suggest that dust may be present in the hot X-ray emitting intracluster gas. However, IRAS failed to detect any infrared emission from the cluster at the level expected from the extinction measurements. The authors have carried out a detailed analysis of the properties of intracluster dust in the context of a model which includes continuous injection of dust by the cluster galaxies, grain destruction by sputtering, and transient grain heating by the hot plasma. The computed infrared fluxes are in agreement with the upper limit obtained from the IRAS. The calculations, and the constraint implied by the IRAS observations, suggest that the intracluster dust must be significantly depleted compared to interstellar abundances.

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