Fig. 5
Diagnostic diagram of log [Fe ii] /Paβ and log H2/ Brγ for the central r = PSF, r = 1″ and the star formation region (SFr). The conversion factor of 0.744 was used for [Fe ii]λ1.644μm over [Fe ii]λ1.257μm (Nussbaumer & Storey 1988). For the conversion of Brγ to Paβ the case B ratio of 0.17 was used. Open symbols correspond to literature values from Larkin et al. (1998, LINER), Dale et al. (2004, SB), Rodríguez-Ardila et al. (2004, 2005, Sy1, Sy2).
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