20–28 Mar 2025
Emperors Palace Hotel Casino Convention Resort
Africa/Johannesburg timezone

Star Formation Histories and Evolutionary Pathways of Fornax Galaxies

24 Mar 2025, 16:00
15m
Emperors Palace Hotel Casino Convention Resort

Emperors Palace Hotel Casino Convention Resort

64 Jones Rd, Kempton Park, Johannesburg, 1620
Talk Galaxy Clusters Science

Speaker

Dejene Zewdie (North-West University)

Description

The Fornax cluster provides an interesting environment to study galaxy evolution. It is still actively assembling mass, with the infalling group Fornax A on the outskirts and an overdense region around the brightest cluster galaxy at the center. The study of this cluster’s environment and the physical processes that govern the transition from blue to red galaxies is crucial for understanding galaxy evolution. In this talk, I will focus on HI-detected galaxies, using SALT and MUSE observations to measure the H-alpha equivalent width. This allows us to distinguish between galaxies evolving slowly and those whose star formation was interrupted within the last $\sim$Gyr. I will discuss our ongoing efforts to characterize the environments of the Fornax cluster using stellar population indicators, aiming to constrain quenching time-scales. We will compare these indicators with the HI gas content of the galaxies, utilizing multiwavelength observations from MeerKat, SALT, and MUSE. The presentation will emphasize the effects of the cluster environment on the stellar populations and their connection to gas content.

Stream Science

Primary authors

Dejene Zewdie (North-West University) Prof. Ilani Loubser (North-West University)

Presentation materials

There are no materials yet.