TORUS AND ACTIVE GALACTIC NUCLEUS PROPERTIES OF NEARBY SEYFERT GALAXIES: RESULTS FROM FITTING INFRARED SPECTRAL ENERGY DISTRIBUTIONS AND SPECTROSCOPY

摘要: We used the CLUMPY torus models and a Bayesian approach to fit infrared spectral energy distributions ground-based high angular resolution mid-infrared spectroscopy of 13 nearby Seyfert galaxies. This allowed us put tight constraints on model parameters such as viewing angle i, radial thickness Y, size cloud distribution σtorus, average number clouds along equatorial rays N 0. found that i is not only parameter controlling classification galaxy into type 1 or 2. In principle, 2s could be viewed at any long there one line sight. A more relevant quantity for clumpy media probability an active galactic nucleus (AGN) photon escape unabsorbed. our sample, 1s have relatively probabilities, P esc ~ 12%-44%, while 2s, expected, tend very low probabilities. Our fits also confirmed tori galaxies are compact with radii in range 1-6 pc. The scaling data provided AGN bolometric luminosities L bol(AGN), which were good agreement estimates from literature. When we combined sample PG quasars literature span bol(AGN) 1043-1047 erg s–1, plausible evidence receding torus. That is, tendency geometrical covering factor lower (f 2 0.1-0.3) than 0.9-1 ~1043-1044 s–1). because appear wider sizes (larger σtorus) rays. cannot, however, rule out possibility this due contamination by extended dust structures associated dusty luminosities, since most these hosted highly inclined