Abstract Details

Name: Sheeraz Khanday
Affiliation: University of Kashmir
Conference ID: ASI2020_140
Title : Morphological Study and Mass Distribution in Six Nearby Abell clusters
Authors and Co-Authors : Sheeraz Khanday,Kanak Saha,Naseer Iqbal
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : We study the mass distribution in six nearby Abell (z < 0.06) clusters A0262, A426,A0553,A0569, A576 and A1156.Because of the dominance of dark matter in galaxy clusters,We approximate their total density distribution by the Navarro, Frenk White(NFW) formula Characterised by viral mass and concentration.Using the velocity and position data for 120–300 galaxies per cluster we calculate, after removal of interlopers, the profiles of the lowest order even velocity moments, dispersion and kurtosis. We then reproduce the velocity moments by jointly fitting the moments to the solutions of the Jeans equations. Including the kurtosis in the analysis allows us to break the degeneracy between the mass distribution and anisotropy and constrain the anisotropy as well as the virial mass and concentration . We visually study the morphology of all the galaxies present in these clusters and obtain their structural parametrs by running GALFIT on them .We also study the star-formation rates of galaxies in these cluster galaxies.