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Properties of H II Regions in the Centers of Nearby Galaxies

  • Authors: Luis C. Ho, Alexei V. Filippenko, and Wallace L. W. Sargent

Ho, Filippenko, & Sargent 1997 The Astrophysical Journal 487 579.

  • Provider: AAS Journals

Caption: Fig. 9.

Diagnostic diagram plotting log [O III] λ5007/Hβ vs. log [N II] λ6583/Hα for (filled circles) early‐type (S0–Sbc) H II nuclei and (open circles) late‐type (Sc–I0) H II nuclei. The curve denotes the theoretical models of disk H II regions by McCall et al. (1985) described in the caption of Figure 7. The unusual object IC 2574 (see § 4.2) is labeled.

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