Image Details
Caption: Fig. 18.
R magnitude as a function of redshift for the CDFS X‐ray sources. Symbols are as in Fig. 2. The dotted lines indicate the two structures around ﹩z=0.67﹩ and 0.73. The solid line corresponds to an absolute magnitude of ﹩M_{R}=-23﹩.
© 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A.