3 papers
astro-ph.SR2026
Starspot activity and surface differential rotation on UX Arietis
Yue Xiang, Shenghong Gu, A. Collier Cameron +2
We present new Doppler images of the K0 subgiant primary component of the RS CVn-type binary UX Arietis (UX Ari), derived from time-series spectra obtained in November--December of…
astro-ph.SR2025
Magnetic activity of ultracool dwarfs in the LAMOST DR11
Yue Xiang, Shenghong Gu, Dongtao Cao
Ultracool dwarfs consist of lowest-mass stars and brown dwarfs. Their interior is fully convective, different from that of the partly-convective Sun-like stars. Magnetic field gene…
astro-ph.SR2024
Further study of starspot activity and measurement of differential rotation for SZ Piscium
Yue Xiang, Shenghong Gu, A. Collier Cameron +2
We present a series of 9 Doppler images of the magnetically active K component of the RS CVn-type binary SZ Psc, based on the high-resolution spectroscopic data collected from 2014…