activity
20242026
most citedNLTE abundances of Eu for a sample of metal-poor stars in the Galactic Halo and Metal-poor Disk with 1D and <3D> models

7 citations · 16 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.SR2026

Empirical colour--effective temperature relations in the SDSS system from IRFM temperatures of GALAH and APOGEE stars

Zenghua Zhou, Luca Casagrande, Xiaobin Zhang +5

Reliable estimates of stellar effective temperature () are fundamental to stellar population studies and Galactic astrophysics. However, the majority of stars ob…

astro-ph.IM2026★ 1 cited

Recalibration of SDSS photometric zero-points based on the InfraRed Flux Method temperature scale

Zenghua Zhou, Luca Casagrande, Heran Xiong +4

Accurate photometric zero-points are essential for translating observed magnitudes into physical fluxes, from comparing with models to ensuring consistency across surveys. We deter…

astro-ph.SR2026

Identification of false positive double-lined spectroscopic binaries in LAMOST-MRS data due to moonlight contamination

Zhoulin Wang, Mikhail Kovalev, Jianping Xiong +2

We present a method for identifying false positive double-lined spectroscopic binary (SB2) candidates by analysing medium-resolution survey spectra from the Large Sky Area Multi-Ob…

astro-ph.SR2025★ 1 cited

The origin of B-type runaway stars based on kinematics

Yanjun Guo, Chao Liu, ZhiCun Liu +5

Runaway stars depart their birthplaces with high peculiar velocities. Two mechanisms are commonly invoked to explain their origin, the binary supernova scenario (BSS) and the dynam…

astro-ph.SR2025★ 5 cited

The binary fraction of Blue Horizontal-Branch (BHB) Stars

Yanjun Guo, Kun Chen, Zhenwei Li +6

Blue horizontal-branch (BHB) stars are old, low-mass, metal-poor stars that serve as important tracers of the Galactic halo structure, kinematics, and evolution.Understanding their…

astro-ph.SR2025★ 2 cited

The Binary Fraction of B-type Runaway Stars from LAMOST DR8

Kun Chen, Yanjun Guo, Dengkai Jiang +2

Runaway stars are defined as stars that depart from their birth clusters at high peculiar velocities. There are two main mechanisms for the formation of runaway stars, i.e., the bi…

astro-ph.GA2025

The Magnified Waltz: Simulating Light Curves of Binary Stars Passing through Micro-Caustics in Strong Lensing Galaxy Clusters

Wenwen Zheng, Xiaoting Fu, Yang Chen +5

Individual stars located near the caustics of galaxy clusters can undergo extreme magnification when crossing micro-caustics, rendering them observable even at cosmological distanc…

astro-ph.SR2024★ 7 cited

NLTE abundances of Eu for a sample of metal-poor stars in the Galactic Halo and Metal-poor Disk with 1D and <3D> models

Yanjun Guo, Nicholas Storm, Maria Bergemann +6

Accurate measurements of europium abundances in cool stars are essential for an enhanced understanding of the r-process mechanisms. We measure the abundance of Eu in solar spectra…