Correlation of bulge transformation in disc galaxies with the gradual decrease in their stellar activity

The speaker will present their latest results which demonstrate that as disc galaxies accumulate more mass, their central stellar mass density increases, bulge type transforms, stellar population ages and stellar activity recedes. These results have been derived after performing careful 2D mass-based structural (bulge + disc) decomposition of all disc galaxies (1263) in the Herschel imaging area of the Stripe82 region using Ks-band images from the latest VICS82 survey. The scaling relations thus derived are found to reflect the internal kinematics and are employed in combination to select an indubitable set of classical (CBD) and pseudo bulge hosting disc galaxies (PBD). The rest of the galaxies (

Meeting ID: 731 2099 7847, Password: astroPKU
Thursday, June 11, 2020 - 2:00PM to Thursday, June 11, 2020 - 2:30PM