60 micron luminosity evolution of rich clusters of galaxies

Details 60 micron luminosity evolution of rich clusters of galaxies 60 micron luminosity evolution of rich clusters of galaxies

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361..354k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. 354-361.

Astronomy and Astrophysics

Astronomy

9

Astronomical Photometry, Galactic Clusters, Galactic Evolution, Infrared Astronomy Satellite, Luminous Intensity, Point Spread Functions, Red Shift

Scientific paper

The average 60-micron flux has been determined for a collection of optically selected galaxy clusters at redshifts ranging from 0.30 to 0.92. The result, 26 mJy per cluster, represents the faintest flux determination known of using the IRAS data base. The flux from this set of clusters has been compared to the 60-micron flux from a sample of nearby galaxy clusters. It is found that the far-infrared luminosity evolution in cluster galaxies can be no more than a factor of 1.7 from z = 0.4 to the present epoch. This upper limit is close to the evolution predicted for simple aging of the stellar populations. Additional processes such as mergers, cannibalism, or enhanced rates of starbursts appear to occur at a low enough level that they have little influence on the far-infrared emission from clusters over this redshift range.

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