Lunch talk on Apr. 7, 2025

Shadows of the Universe: Studying Edge-On Low Surface Brightness Galaxies

Speaker: Tianwen Cao (XMU)

Venue: SWIFAR Building 2111

Time: 12:45 PM, Monday, Apr. 7, 2025

Abstract: 

Low Surface Brightness Galaxies (LSBGs) are faint, diffuse systems that challenge conventional models of galaxy formation and evolution. Defined by their low stellar density and dark matter dominance, LSBGs occupy a unique position in the cosmic hierarchy. In this talk, I will present a study of a sample of edge-on low surface brightness galaxies (ELSBGs), focusing on their chemical evolution and star formation history (SFH). Our findings reveal an alpha-enhancement trend in massive LSBGs, and LSBGs follow the "downsizing" pattern seen in galaxy evolution. Additionally, I will introduce integral field spectroscopic (IFS) observations of two ELSBGs, AGC 102004 and AGC 111629. By combining IFS data with CO observations from the JCMT, we analyze the properties of both the ionized and cold gas components, shedding light on the physical processes governing these enigmatic galaxies.

Report PPT:  SWIFAR_Tianwen Cao.pptx