How does quenching proceed inside a galaxy?

For Waz arc and SGAS 2111 in JWST LEGGOS survey, I use gravitational lensing and JWST/NIRSpec spectroscopy to study how neutral and low-ionization gas flows vary across individual clumps within a high-redshift galaxy, including the 2111/WAZ system.

• Analyzing JWST/NIRSpec observations of a gravitationally lensed high-redshift galaxy to extract spatially resolved, clump-level spectra.
• Measuring absorption features such as Na I D, Mg II, and Fe II to constrain neutral and low-ionization gas flows across different galaxy substructures.
• Comparing gas-flow signatures with local clump properties, including star-formation activity, continuum shape, and evolutionary state.
• Developing a consistent framework to connect clump-scale gas kinematics with the broader baryon-cycle picture of galaxy quenching.

This analysis is ongoing. The current focus is on robust spectral extraction, absorption-line measurement, and interpretation, so finalized physical conclusions are not yet presented here.

My previous work studies neutral gas outflows at the population level in massive quenching galaxies. This project extends that question to the internal structure of individual galaxies: instead of asking only whether a population shows an outflow signature, I ask where gas is moving within a galaxy and how that motion relates to local star formation and quenching.

By resolving gas flows across individual clumps, this work aims to connect galaxy-scale evolutionary pathways with the spatially complex baryon cycle operating inside early massive galaxies.