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A comprehensive study of the color distributions of dwarf early-type galaxies

PhD ceremony:Ms E. Hamraz
When:May 01, 2020
Start:14:30
Supervisors:prof. dr. R.F. (Reynier) Peletier, prof. dr. H.G. Khosroshahi, prof. dr. E.A. (Edwin A.) Valentijn
Where:Academy building RUG
Faculty:Science and Engineering
A comprehensive study of the color distributions of dwarf
early-type galaxies

Dwarf galaxies are the most abundant galaxies in the Universe. Since they are faint and small in size, they have not been studied as much as other types of galaxies. In this thesis, we investigated the physics of dwarf early-type galaxies by studying their colors, as a proxy of their stellar populations, and their scaling relations. We also explored how the environment of these galaxies influences their properties. We tried to understand the physics of dwarf early-type galaxies (dEs) more by studying their colors using high resolution photometric images to not only study the outer parts of these galaxies, but also to zoom into the very inner regions as small as a few parsec to investigate their center in nearby clusters as well. We explored color-magnitude diagrams of dwarf early-type galaxies and investigated what information can be extracted from the position of a galaxy on the color-magnitude diagram. In addition, we used the color profile of each galaxy to find out how its color changes from the innermost part of a galaxy to its outer part. Besides color, we measured more photometric properties such as effective radius, magnitude, etc.