Abstract Details

Name: Sruthi K
Affiliation: University of Calicut
Conference ID: ASI2020_72
Title : QUENCHING OF STAR FORMATION IN FIELD EARLY TYPE GALAXIES
Authors and Co-Authors : K. Sruthi & C. D. Ravikumar, Department of Physics, University of Calicut, Malappuram-673635, India.
Abstract Type : Oral
Abstract Category : Extragalactic Astronomy
Abstract : Correlations between mass of the central supermassive blackhole and numerous properties of their host galaxies have been reported in the literature. The central intensity ratio (CIR) defined by Aswathy & Ravikumar (2018) explores the possibility of a simple photometric parameter involving the light within two concentric apertures centered at the very centre of the galaxy image. CIR is reported to be strongly correlated with the mass of the supermassive blackhole, central velocity dispersion, and other host galaxy properties. In the present study, we construct a sample of 54 field early type galaxies including 25 ellipticals and 29 lenticulars within 30 Mpc distance with HST observations from Wang et al. (2016). CIR of the sample shows good negative correlation with the mass of the super massive black hole residing at the centre of host galaxy, indicating the possibility of quenching of star formation in these systems as the central blackhole grows.