Image Details
Caption: Fig. 5.
Observed color‐magnitude diagram of the Core field of NGC 6522 in instrumental (F336W and F439W) colors. The populations of red giants, horizontal branch stars, etc., were isolated by comparing the CMD with other B vs. U−B CMDs. See text for details.
© 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A.