Image Details
Caption: Fig. 5.
Electron densities (ne) derived from the [S II] λ6716/λ6731 ratio for (a) all H II nuclei in our survey, (b) nuclei with types S0–Sbc, (c) nuclei with types Sc–I0, and (d) the sample of disk H II regions of McCall et al. (1985). The bins are separated by 50 cm−3.
© 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.