Program: GS-2018A-Q-208

Title:Coevolution between galaxies and supermassive black holes: study on a volume limited sample (South)
PI:Daniel Ruschel-Dutra
Co-I(s): Roberto Cid Fernandes, Natacha Zanon Dametto, José Andrés Hernández Jiménez, Thaisa Storchi-Bergmann, Allan Schnorr-Muller, Guilherme Couto

Abstract

The masses of supermassive black holes (SMBH) are known to correlate with the properties of the host spheroid, such as the stellar velocity dispersion and the stellar mass, suggesting a link between the evolution of both entities. Numerical simulations have shown that co-evolution between bulges and SMBHs is a natural consequence of inflows toward the center of the galaxy, which feed both the active nucleus (AGN) and the circumnuclear star formation. On the other hand feedback from the AGN is capable of quenching star formation, also limiting further accretion onto the SMBH. We propose to study feeding and feedback processes of the nuclear activity by analyzing the spatially resolved optical spectroscopy of the inner kiloparsec of a complete volume limited sample of local AGN selected by their hard X-ray emission, from the Swift/BAT 70 month catalog. The sample consists of 32 AGNs within z < 0.01 and luminosity in the 14-195 keV band of log(L_x [erg s^-1]) > 42.35. Most of the proposed sample has already been observed with GMOS, and we are on the final stages of analysis of this data for 18 of these galaxies. Only 14 targets remain to achieve a complete sample, and this proposal concerns the 6 galaxies with good visibility conditions on the first semester (A) of the year.

Publications using this program's data