| Description |
This proposal is to measure the full 200-670um FTS spectra at high resolution (virgul500 km/s) of 10 bright Seyfert nuclei. We are aiming to detect the high-J CO lines, the CI and NII fine structure lines and any other possible emission or absorption from H2O or other molecules. The selected targets include four AGN1.s (two Seyfert 1.s and two HBLR-Seyfert 2.s), three AGN2.s and three lower nuclear activity objects. These objects have been chosen because they are the brightest at 60-100 um and their IR luminosity has been separated between AGN and Starburst components through mid-IR spectroscopy. This program is fully complementary to the Hercules OTKP, which is focused on SPIRE FTS spectroscopy of the ULIRG/LIRG population, while the present proposal targetsoptically bright nuclei, at a presumably later evolutionary stage.We expect that the detection of the CO ladder in Seyfert nuclei will allow us to measure the effects of the AGN on the circum-nuclear ISM of the galaxy through detection of X-ray dominated regions. Moreover the molecular spectroscopy could reveal the presence of the predicted molecular tori.The 10 galaxies for which we request SPIRE FTS observations of their nuclei in one single position can be observed in a total integration time of 14.7 hours. To complement the spectroscopic observations, photometric imaging with SPIRE and PACS is also requested with a total time needed of 0.7 and 2.4 hours, respectively. |
