Lunch talk on Dec. 12, 2022

The first rest-frame optical size-luminosity relation of galaxies at z>7

Speaker: Lilan Yang (University of Tokyo)

Venue: Video Conference

Time: 12:30 PM, Monday, Dec. 12, 2022

Abstract: 

The size of a galaxy is a fundamental observable quantity. Its evolution and scaling relation with other properties, such as luminosity and stellar mass, provide important clues on the formation and evolution of galaxies across cosmic time. I will present the results of the first rest-frame optical size-luminosity relation of galaxies at z>7, using the NIRCam imaging data obtained by the GLASS James Webb Space Telescope Early Release Science (GLASS-JWST-ERS) program, providing the deepest extragalactic data of the ERS campaign. I measured the size of the galaxies in 5 bands, from the rest-frame optical to the ultra-violet based on the Sersic model, and obtained the best fits of the size-luminosity relation. In this talk, I will discuss the morphological properties and size-luminosity relation as a function of wavelength and its implication.

Report PPT:  SWIFAR_Lilan Yang.pdf