12 citations
- Xinjiang UniversityCN4 papers
- Xiamen UniversityCN3 papers
- Xinjiang Astronomical ObservatoryCN3 papers
- Chinese Academy of SciencesCN2 papers
- Anhui Polytechnic UniversityCN1 paper
- National Astronomical ObservatoriesCN1 paper
- University of Chinese Academy of SciencesCN1 paper
- University of DelawareUS1 paper
- Xi'an Jiaotong UniversityCN1 paper
11 papers
Novae: An Important Source of Lithium in the Galaxy
Jun Gao, Chunhua Zhu, Guoliang Lü +4
The source of the Galactic Lithium (Li) has long been a puzzle. With the discovery of Li in novae, extensive research has been conducted. However, there still exists a significant…
The population synthesis of Wolf-Rayet stars involving binary merger channels
Zhuowen Li, Chunhua Zhu, Guoliang Lü +5
Wolf-Rayet stars (WRs) are very important massive stars. However, their origin and the observed binary fraction within the entire WR population are still debated. We investigate so…
Hydrogen-free Wolf-Rayet stars: Helium stars with envelope-inflation structure and rotation
Xizhen Lu, Chunhua Zhu, Helei Liu +3
Observations have shown that the effective temperature of hydrogen-free Wolf-Rayet (WR) stars is considerably lower than that of the standard model, which means that the radius of…
Li-rich and super Li-rich giants produced by element diffusion
Jun Gao, Chunhua Zhu, Jinlong Yu +4
Context. About 0.2-2% of giant stars are Li-rich, whose lithium abundance (A(Li)) is higher than 1.5 dex. Among them, near 6% are super Li-rich with A(Li) exceeding 3.2 dex. Meanwh…
A generalization of Noel-Reed-Wu Theorem to signed graphs
Wei Wang, Jianguo Qian
Let be a signed graph where two edges joining the same pair of vertices with opposite signs are allowed. The zero-free chromatic number of is the minimum even inte…
Chromatic-choosability of hypergraphs with high chromatic number
Wei Wang, Jianguo Qian
It was conjectured by Ohba and confirmed recently by Noel et al. that, for any graph , if then . This indicates that the graphs with high chroma…