Image Details
Caption: Fig. 15.
Line ratios [S II] λλ6716, 6731/Hα and [O I] λ6300/Hα correlate well with each other. Filled circles denote early‐type (S0–Sbc) H II nuclei, and open circles denote late‐type (Sc–I0) H II nuclei.
© 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.