3 papers
astro-ph.GA2026
Correlation between the two-armed spiral in the -- plane and moving groups
Yan Xu, Chao Liu, Chengdong Li +5
We use a cross-matched sample of 3.7 million stars from Gaia DR3 and LAMOST DR7 to investigate the velocity substructures in the Milky Way disk. The median radial velocity as…
astro-ph.GA2026
Optically Selected Superthin Galaxies Remain Thin in the Near-infrared
Jianhong Hu, Cheng Li, Dandan Xu
We investigate whether galaxies identified as superthin in optical images remain superthin in the near-infrared (NIR), and how their extreme disk morphology is related to environme…
astro-ph.GA2026
Episodic Star Formation -- I. Overview and Scatter of the Star-Forming Main Sequence
Yuqian Gui, Dandan Xu, Haoyi Wang +4
Episodic star formation cycles in both high- and low-redshift galaxies have gained more and more evidence. This paper aims to understand the detailed physical processes behind such…