6 papers
The Stellar Abundances and Galactic Evolution Survey (SAGES). V. The First Data Release of the DDO51 Band
Qiqian Zhang, Zhou Fan, Gang Zhao +20
We present the first public data release of DDO51 band from the Stellar Abundances and Galactic Evolution Survey (SAGES), based on Nanshan One-meter Wide-field Telescope (NOWT) obs…
Searching for Contact Binaries with LAMOST and TESS
Ting Wu, Jin-Zhong Liu, Senyu Qi +4
Contact binaries (CBs) serve as fundamental laboratories for studying complex stellar interactions, including mass transfer, tidal effects, and angular momentum loss. In this work,…
Antarctic TianMu Staring Observation Project II: Data reduction and preliminary results
Hubiao Niu, Jing Zhong, Yu Zhang +6
The Antarctic TianMu Staring Observation Program is a time-domain optical sky survey project carried out in Antarctica, capable of large sky coverage, high-cadence sampling, and lo…
Unraveling eMSTO in NGC 2355: Stellar Rotation and Binaries
Jayanand Maurya, Yu Zhang, Hubiao Niu
The extended Main Sequence Turn-off (eMSTO) in the open cluster NGC 2355 is investigated using precise astrometry and photometry from Gaia DR3 and spectroscopic data from the Gaia-…
The impact of stellar rotations and binaries on the shape of upper main sequence near turn off in open cluster NGC\,6067
Jayanand Maurya, Yu Zhang, Sebastian Kamann +7
We present the analysis of the extended Main Sequence Turn-Off (eMSTO) in the open cluster NGC\,6067. We derive the projected rotational velocity, \textit{v}sin\textit{i}, of the s…
Insights into the 3D layered structure of nearby open clusters through N-body simulations
Kaixiang Lang, Yu Zhang, Hubiao Niu +3
Context. Open clusters (OCs) are important for understanding star formation, dynamics, and evolution. Previous studies have indicated a relationship between cluster structure and m…