Abstract

Contributed Talk - Splinter AGN

Wednesday, 20 September 2017, 15:15   (HS4)

IC4329A: a red Seyfert-1 nucleus in an edge-on host galaxy

Catalina Sobrino Figaredo¹, Michael Ramolla¹, Christian Westhues¹, Martin Haas¹, Rolf Chini^1,2
1Astronomical Institute, Ruhr-University Bochum, 44780 Bochum, NA7, Germany
²Instituto de Astronomia, Universidad Cat\'olica del Norte, Avenida Angamos 0610, Casilla 1280 Antofagasta, Chile

At Universitäststernwarte Bochum near Cerro Armazones in Chile, we performed photometric reverberation mapping of the Seyfert-1 galaxy IC4329A at z = 0.016. H\alpha variations lag the B and R band continuum variations by about 15 days and the J band dust emission variations lag by about 30 days - consistent with the orientation dependent AGN unified model where the BLR lies inside the dust torus. Combining the Flux Variation Gradient method with multi-aperture photometry, we disentangled the SED of the AGN and the host galaxy. The AGN continuum is strongly reddened, presumably by dust in the host galaxy which appears to be edge-on on the images. Thus one may expect a reduced AGN continuum luminosity. Nevertheless, IC4329A perfectly lies on the relation between BLR size and 5100\AA~ AGN luminosity for unreddened AGN.