Limits on Dust in Rich Clusters of Galaxies from the Color of Background Quasars

Details Limits on Dust in Rich Clusters of Galaxies from the Color of Background Quasars Limits on Dust in Rich Clusters of Galaxies from the Color of Background Quasars

1995-08-20

arxiv.org/abs/astro-ph/9508093v1

Astronomy and Astrophysics

Astrophysics

Submitted to ApJ Letters. 14 pages incl. 2 figures, uuencoded, compressed postscript. Also available by anonymous ftp to ftp

Scientific paper

10.1086/309833

I measure the V-I color distribution of two samples of radio-selected quasars. Quasars from one sample are projected on the sky within 1 degree of a rich foreground Abell cluster of galaxies, while quasars from the other sample are more than 3 degrees from any such cluster . There is no significant difference between the color distributions of the two samples. The 90\% upper limit on the relative reddening between the two samples is E(B-V)=0.05 mag. This result limits the allowed quantity of smoothly distributed dust in rich clusters, and contradicts previous indications for the existence of such a component.

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