2 papers
astro-ph.SR2026
HI envelope around the carbon star V420 Vul
Xu-Jia Ouyang, Yong Zhang, Chuan-Peng Zhang +1
We report the detection of an extended 21-cm parsec-scale \ion{H}{i} structure toward the Mira variable V420\,Vul using archival Galactic Arecibo L-band Feed Array survey data. The…
astro-ph.SR2025
A Machine-Learning Approach for Identifying CME-Associated Stellar Flares in TESS Observations
Yu Shi, Hong-Peng Lu, Li-Yun Zhang +2
Coronal mass ejections (CMEs) are major drivers of stellar space weather and can strongly influence the habitability of exoplanets. However, compared to the frequent occurrence of…