Weekly Seminar
Galactic Genesis to Twilight: Charting Stellar Evolution in Nearby Galaxies with PHANGS-JWST Mid-IR Observations
Galactic Genesis to Twilight: Charting Stellar Evolution in Nearby Galaxies with PHANGS-JWST Mid-IR Observations
Hamid Hassani
(University of Alberta)
(University of Alberta)
18 SEP 2024
13:30 - 15:00
The PHANGS-JWST survey provides an unprecedented opportunity to study the complex stages of stellar evolution in nearby galaxies through mid-infrared (Mid-IR) observations. Using high-resolution imaging, we trace the lifecycle of stars from deeply embedded regions, where young stellar objects (YSOs) are still enshrouded in dust, to more evolved stages such as post-Asymptotic Giant Branch (post-AGB) stars and HII regions. The JWST’s capabilities enable us to examine the dust emission and stellar feedback processes that occur throughout these stages. By analyzing photometric data in the mid-IR, we aim to construct a comprehensive timeline of stellar development, from the birth of stars within dense clouds to their late stages as post-AGB stars. These insights contribute to our understanding of how stellar evolution influences the interstellar medium and drives galactic transformation.