Abstract Details
| Name: Ankit Kumar Affiliation: IIA, Bengaluru Conference ID: ASI2019_419 Title : Bulge Growth of Disk Galaxy in Fly-by Interaction Authors and Co-Authors : Ankit Kumar, Mousumu Das, Sandeep Kumar Kataria Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : The hierarchical model of the universe suggests that galaxies have formed through the merger of small galaxies. Mergers were more frequent in far past when the universe was small in size. The morphological and kinematic properties of a galaxy depend on what kind of mergers it has gone through. This is the motivation of our present work. When two galaxies with different mass come close enough then a huge gravitational force of major galaxy disrupt the minor galaxy, collision between gas clouds produce a burst of star formation, loss of the angular momentum of stars and gas increase the size of the bulge and supermassive black hole and sometimes produce high energy jets. We are doing the numerical N-body simulation of the interaction of two galaxies with varying pericenter distance, initial orientation, and mass ratios etc. We used GalIc code to generate initial conditions of two isolated galaxies. By putting both galaxies together on parabolic orbits, we are evolving them with open source code Gadget-2. The objective of this project is to see the growth of the bulge in the different configuration of interaction and to find the favorable conditions for bulge growth of disk galaxy in fly-by interaction. |