69 citations · 154 across the 8 of their papers we have counts for
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Hot Subdwarfs in Binaries as the Source of the Far-UV Excess in Elliptical Galaxies
Philipp Podsiadlowski, Zhanwen Han, Anthony E. Lynas-Gray +1
The excess of far-ultraviolet (far-UV) radiation in elliptical galaxies has remained one of their most enduring puzzles. In contrast, the origin of old blue stars in the Milky Way,…
Chemical Abundances in Symbiotic Stars
Guoliang Lu, Chunhua Zhu, Zhanwen Han +1
We have carried out a study of the chemical abundances of H, He, C, C, N, N, O, O, Ne and Ne in symbiotic stars (SSs…
Fitting Formulae for the Effects of Binary Interactions on Lick Indices and Colours of Stellar Populations
Zhongmu Li, Zhanwen Han
More than about 50% stars of galaxies are in binaries, but most stellar population studies take single star-stellar population (ss-SSP) models, which do not take binary interaction…
Binary Stars as the Source of the Far-UV Excess in Elliptical Galaxies
Zhanwen Han, Philipp Podsiadlowski, Anthony E. Lynas-Gray
The discovery of an excess of light in the far-ultraviolet (UV) spectrum in elliptical galaxies was a major surprise in 1969. While it is now clear that this UV excess is caused by…
How young stellar populations affect the ages and metallicities of galaxies
Zhongmu Li, Zhanwen Han
Some studies show that there are recent star formations in galaxies including early type galaxies. This suggests that we possibly did not obtain the accurate ages and metallicities…
Inclusion of Binaries in Evolutionary Population Synthesis
Fenghui Zhang, Zhanwen Han, Lifang Li +1
Using evolutionary population synthesis we present integrated colours, integrated spectral energy distributions and absorption-line indices defined by the Lick Observatory image di…