AbstractsAstronomy & Space Science

Unveiling the globular cluster systems of early-type galaxies using wide-field imaging

by Kartha Sreeja Sudarsanan

Institution: Swinburne University of Technology
Year: 2016
Keywords: Elliptical galaxies; Lenticular galaxies; Globular cluster system; Wide-field imaging; Extragalactic globular clusters; NGC 720; NGC 1023; NGC 2768; NGC 3607; NGC 3608
Posted: 02/05/2017
Record ID: 2065191
Full text PDF: http://hdl.handle.net/1959.3/419028


Globular cluster (GC) systems can be used as powerful tools to investigate the evolutionary history of early-type galaxies. In this thesis, we study the GC systems of five early-type galaxies in which first investigation for four galaxies using wide-field imaging data. All GC systems show a clear distribution of blue and red GCs. Also, we explore their radial density, colour and azimuthal distributions. We find a dependence of the relative fraction of blue to red GCs with host galaxy environmental density for lenticular galaxies. A one-to-one relation between the ellipticities of red GCs and the galaxy stellar light emphasises the evolutionary similarities between them. Advisors/Committee Members: Swinburne University of Technology. Faculty of Science, Engineering and Technology.