The colour of the narrow line Sy1-blazar 0324+3410
SIM-IDL, Faculdade de Ciências da Universidade de Lisboa Campo Grande, C8, 1749-016 Lisboa, Portugal e-mail: firstname.lastname@example.org
2 University of Manchester, Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK
3 Faculdade de Ciências da Universidade de Lisboa Campo Grande, C8, 1749-016 Lisboa, Portugal
Accepted: 20 August 2008
Aims. We investigate the properties of the host galaxy of the blazar J0324+3410 (B2 0321+33) by the analysis of B and R images obtained with the NOT under good photometric conditions.
Methods. The galaxy was studied using different methods: Sersic model fitting, unsharp-masked images, image and profile analysis.
Results. The images show that the host galaxy has a ring-like morphology. The colour image reveals two bluish zones: one that coincides with the nuclear region, interpreted as the signature of emission related to the active nucleus, the other zone is extended and is located in the host ring-structure. We discuss the hypothesis that the later is thermal emission from a burst of star formation triggered by an interacting/merging process.
Key words: galaxies: active / galaxies: peculiar / galaxies: photometry
© ESO, 2008