Скачать или смотреть HICE2025 by Yu-Chia Lin @ May6

Title: TW Hydrae and its Protoplanetary Disk via JWST/NIRCam

Abstract:
TW Hydrae has long been recognized as the nearest protoplanetary disk, and it remains the closest well-studied, gas-rich disk surrounding a young, Sun-like T Tauri star. Its proximity, nearly face-on orientation, and extensive archival coverage make it an ideal benchmark for studying the morphology and evolution of planet-forming environments. In this talk, I will present new JWST/NIRCam coronagraphic observations of TW Hya obtained in four filters (F187N, F200W, F356W, and F444W). By applying high-pass filtering, PSF reference subtraction, and deconvolution techniques, we resolve fine-scale disk structures and obtain precise measurements of the disk’s inclination and position angle. Our results confirm a disk inclination of about 5°, consistent with the previous ALMA study, and reveal a bifurcation feature in the outer disk.