Abstract Details
| Name: Akshara Viswanathan Affiliation: Anna University Conference ID: ASI2019_72 Title : Quantification of the merger fraction in local AGN hosts Authors and Co-Authors : Ms.Akshara Viswanathan, Prof.Dr.Sara Ellison Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : The objective of the research was to find the possible connection between the Active Galactic Nuclei(AGN) and Galaxy Mergers using the data pipe-lined from Canada France Imaging Survey(CFIS) and Sloan Digital Sky Survey(SDSS). Starting from a list of known AGN identified in the SDSS based on optical emission line diagnostics, quantifying the fraction of galaxies in on-going or recent mergers was carried out with tile images pipe lined from respective CFIS Data. The same calculation was performed with a set of mass and red-shift matched non-AGN (or the control sample) in order to infer whether there is an excess of merger morphology in the AGN sample. With a sample of 972 AGN, it was inferred that high luminosity AGN is undergoing interaction more and more in comparison to low luminosity ones, highly massive AGN have interactions more, ie., they dominate in interacting pairs and post mergers, galaxies that are closer, dominate in post mergers whereas it is the vice versa in case of interacting pairs and it is also visible that in isolated, control galaxies are dominating, but as the interaction level increases, the difference in domination of AGN by control is decreasing, but still AGN is dominating in all morphologies of merger interactions. This type of study could in future be repeated for other AGN selection methods, e.g. in the mid-IR, radio or X-ray and various other research. |