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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…
How binary interactions affect spectral stellar population synthesis
Zhongmu Li, Zhanwen Han
Single-star stellar population (ssSSP) models are usually used for stellar population studies. However, more than 50% of stars are in binaries and evolve differently from single st…
An Isochrone Database and a Rapid Model for Stellar Population Synthesis
Zhongmu Li, Zhanwen Han
We first presented an isochrone database that can be widely used for stellar population synthesis studies and colour-magnitude diagram (CMD) fitting. The database consists of the i…
Pulsational frequencies of the eclipsing delta-Scuti star HD 172189
J. E. S. Costa, E. Michel, J. Pena +12
The eclipsing delta-Scuti star HD 172189 is a probable member of the open cluster IC 4756 and a promising candidate target for the CoRoT mission. The detection of pulsation modes i…
Multi-site observations of Delta Scuti stars 7 Aql and 8 Aql (a new Delta Scuti variable): The twelfth STEPHI campaign in 2003
L. Fox Machado, E. Michel, F. Perez Hernandez +12
We present an analysis of the pulsation behaviour of the Delta Scuti stars 7 Aql (HD 174532) and 8 Aql (HD 174589) -- a new variable star -- observed in the framework of STEPHI XII…
Colour pairs for constraining the age and metallicity of stellar populations
Zhongmu Li, Zhanwen Han
Using a widely used stellar population synthesis model, we study the ability of using pairs of AB system colours to break the well-known stellar age--metallicity degeneracy and giv…