Gandhi, P.P.GandhiYamada, S.S.YamadaRicci, C.C.RicciAsmus, D.D.AsmusMushotzky, R. F.R. F.MushotzkyUeda, Y.Y.UedaTerashima, Y.Y.TerashimaLA PAROLA, VALENTINAVALENTINALA PAROLA2020-03-202020-03-2020150035-8711http://hdl.handle.net/20.500.12386/23442We present X-ray observations of the active galactic nucleus (AGN) in NGC 4785. The source is a local Seyfert 2 which has not been studied so far in much detail. It was recently detected with high significance in the 15-60 keV band in the 66-month Swift/BAT (Burst Array Telescope) all sky survey, but there have been no prior pointed X-ray observations of this object. With Suzaku, we clearly detect the source below 10 keV, and find it to have a flat continuum and prominent neutral iron fluorescence line with equivalent width ≳1 keV. Fitting the broad-band spectra with physical reflection models shows the source to be a Compton-thick AGN with N_H of at least 2 × 10^24 cm^-2 and absorption-corrected 2-10 keV X-ray power L_2-10 ∼ few times 10^42 erg s^-1. Realistic uncertainties on L_2-10 computed from the joint confidence interval on the intrinsic power-law continuum photon index and normalization are at least a factor of 10. The local bona fide Compton-thick AGN population is highly heterogeneous in terms of WISE mid-infrared source colours, and the nucleus of NGC 4785 appears especially sub-dominant in the mid-infrared when comparing to other Compton-thick AGN. Such sources would not be easily found using mid-infrared selection alone. The extent of host galaxy extinction to the nucleus is not clear, though NGC 4785 shows a complex core with a double bar and inner disc, adding to the list of known Compton-thick AGN in barred host galaxies.STAMPAenArticle10.1093/mnras/stv3442-s2.0-85019894064000355337500057https://academic.oup.com/mnras/article/449/2/1845/1071668http://arxiv.org/abs/1408.4453v12015MNRAS.449.1845GFIS/05 - ASTRONOMIA E ASTROFISICAScienze Fisiche Settori ERC (ERC) di riferimento::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation