A close look at the well-known Seyfert galaxy: Extended emission filaments in Mrk 6

Using various techniques of optical observations at the 6-m Russian telescope (emissionline images, long-slit and 3D spectroscopy), we have studied large-scale morphology and kinematics of the ionized gas in the Seyfert galaxy Mrk 6. Having significantly deeper images and spectra than those in previousworks, we have not onlymapped the ionized gas in the stellar disc but also found a system of faint filaments elongated in the NE direction up to a projected distance of 40 kpc (4.3R25). Kinematics as well as an ionization state of the filament gas suggest the scenario that hard radiation of the active nucleus illuminated the matter accreted from outside and orbiting almost orthogonally to the Mrk 6 stellar disc. A possible source of gas accretion is still unknown, a deep image taken with the 1-m Byrakan Schmidt telescope does not show any stellar counterparts at the level of 27-28 mag arcsec-2. © 2018 The Author(s).