Lunch talk on Sep. 23, 2024

Spatially resolved star formation and ISM of galaxies up to z ~ 2 from HST and JWST observations

Speaker: Lu Shen (Taxes A & M University)

Venue: Video Conference

Time: 12:45 PM, Monday, Sep. 23, 2024

Abstract: 

Tracking spatially resolved star formation in galaxies offer critical insights into their structural evolution and how galaxy formed and quenched. The James Webb Space Telescope (JWST) not only facilitates a systematic exploration of high redshift galaxies, but also enables a detailed study of the rest-frame mid-infrared (mid-IR) and the optical emission lines of galaxies at cosmic noon. These observations provide valuable information on the overall star formation processes. In this talk, I will present two studies using JWST data: the mid-IR morphologies for 70 star-forming galaxies at 0.2<z<2.5 using JWST MIRI observations from the Cosmic Evolution Early Release Science survey (CEERS), the spatially resolved H-alpha equivalent width for 10 galaxies at 0.6<z<2.2 using JWST NIRISS WFSS observation from the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey. These results collectively suggest that galaxies typically grow in an inside-out fashion, with their cores (i.e., bulges) growing through multiple, short-duration bursts and their outer regions (e.g., disks) growing in a more steady state.

Report PPT:  SWIFAR_Lu Shen.pdf