Stellar velocity dispersions in AGN -I. Observational results

摘要

We carried out a spectroscopic survey of a sample of 59 Seyfert nuclei (observed both in the northern and in the southern hemisphere) around the stellar absorption lines of Calcium II at 8498.02, 8542 09 and 8662,14 A (CaT),, Our main goal is to determine their stellar velocity dispersions. These measurements, along with photometric information, will allow us to obtain the M/L ratio, useful to determine the nature of the ~33% of "ambiguous" Seyfert 2.