Fig. 8.
BPT diagram of the blue (blue star symbol) and red (red star symbol) components detected in the optical spectrum of SDSS J1431+4358. The solid and dashed lines divide the regions mainly populated by star-forming galaxies and AGN from Kewley et al. (2001, 2006) and Kauffmann et al. (2003), respectively. The dotted and dot-dashed lines demarcate the Seyfert and LINER zones from Cid Fernandes et al. (2010) and Kewley et al. (2006), respectively.
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