Selection and analysis of Active Galactic Nuclei in OTELO survey

Main Author: Ramón-Pérez, Marina
Format: info Proceeding
Terbitan: , 2016
Online Access: https://zenodo.org/record/166715
Daftar Isi:
  • OTELO (Osiris Tunable Emission Line Object survey) has become the deepest emission-line survey to date using the Tunable Filters of the OSIRIS instrument at the GTC, which allow to obtain 2D low-resolution spectroscopy of all the objects in the field. More than 10k objects have been detected up to 3 sigma in the resulting deep image, with limiting flux of 1.8x10-20 erg/s/cm2/angstrom (mAB=27.18). A first multiwavelength catalogue of all the objects has been built using public archive data from X-Rays to Infrared. The emission-line objects have then been selected and their photometric redshifts derived. The confirmed emitters account for about 10% of the total number of objects, although another 20% of candidates is still awaiting confirmation. The next step has been to discriminate between Star-Forming Galaxies and AGN. To do that, we have used diagnostic and color-color diagrams, such as the ones in Cid-Fernandes et al. (2010) or Donley et al. (2012), as well as the complementary information in X-Rays and MIR. In this talk, we present the latest results obtained from the analysis of the population of Active Galactic Nuclei found in OTELO field of view, with special emphasis on the low-luminosity ones.