3 papers
astro-ph.IM2026
On-sky Fibre-Target-Alignment of the 4MOST instrument: calibration and performance
Roland Winkler, Weijia Sun, Daniel Sablowski +9
The 4-metre Multi-Object Spectroscopic Telescope (4MOST) is a new wide-field, fibre-fed spectroscopic survey facility for the VISTA telescope at ESOs Paranal Observatory. The instr…
astro-ph.SR2025
A hybrid SLAM-Payne framework for atmospheric parameter and abundance determination of early-type Stars from LAMOST DR9 low-resolution Spectra
Weijia Sun
Early-type stars are key drivers of Galactic chemical evolution, enriching the interstellar medium with alpha elements through powerful stellar winds and core-collapse supernovae,…
astro-ph.SR2024
Exploring the Stellar Rotation of Early-type Stars in the LAMOST Medium-resolution Survey. III. Evolution
Weijia Sun, Cristina Chiappini
Stellar rotation significantly shapes the evolution of massive stars, yet the interplay of mass and metallicity remains elusive, limiting our capacity to construct accurate stellar…