Ooops!! I have to post an update to my previous plot - on it I had included the AGN with Broad Lines as if they were part of the BPT diagnostic. This is untrue and inaccurate! Of the peas I was fitting 53 are Broad Line AGN. For these I cannot use the diagnostic plot (BPT diagram), because it was developed for use ONLY with narrow line objects. Further we already know they are AGN because star forming galaxies do not have the broad lines.
So reconsidering, I can label 53 of the Peas as AGN from their broad line emission alone (I used the cutoff of the width of an emission line greater than 1000 km/s - taking the number from a text book by Osterbrock).
Now the plot looks much better: We have 52 star forming peas, 9 galaxies in the transition region (Green points) and 9 galaxies above the cutoff - meaning they are type 2 AGN - this means AGN with narrow lines and not broad lines.
(for more information on AGN you can check out
http://cass.ucsd.edu/public/tutorial/AGN.html)
All of the X-ray sources are AGN as one would expect from their X-ray luminosity.
The Star Formation rates for those labeled as Star Forming galaxies (the points in red on the plot) range from 2 to 33 Msun / year).
