Properties of the HII Regions Derived Using Integral Field Spectroscopy
Figure 3
(a) [OIII]5007/H versus [NII]6583/H diagnostic diagram for the ~7000 ionized regions described in the text. The contours show the density distribution of these regions with the diagram plane, with the outermost contour enclosing 95% of the regions, and each consecutive one enclosing 20% less regions. The color indicates the fraction of young stellar population in the underlying continuum. (b) The same diagnostic diagram restricted to those ionized regions with less than a 20% of young stellar population (~1800 regions). (c) The same diagnostic diagram restricted to those ionized regions with more than a 20% of young stellar population (~5800 regions). In all the panels, the solid- and dashed-line represent, respectively, the Kauffmann et al. [26] and Kewley et al. [27] demarcation curves. They are usually invoked to distinguish between classical star-forming objects (below the solid line) and AGN powered sources (above the dashed line). Regions between both lines are considered intermediate ones.
