Image Details
Caption: Fig. 1.
Number of plate pairs observed as a function of time between observations. Plates with time lags greater than 50 days were replugged and, therefore, their spectra were not co‐added. Only these large time lag plates, representing 53 of the 181 total, are used in this paper.
© 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A.