50 citations · 89 across the 4 of their papers we have counts for
4 papers
A study of supervised classification of Hipparcos variable stars using PCA and Support Vector Machines
P. G. Willemsen, L. Eyer
We report on the automated classification of Hipparcos variable stars by a supervised classification algorithm known as Support Vector Machines. The dataset comprised about 3200 st…
The design and performance of the Gaia photometric system
C. Jordi, E. Hoeg, A. G. A. Brown +32
The European Gaia astrometry mission is due for launch in 2011. Gaia will rely on the proven principles of ESA's Hipparcos mission to create an all-sky survey of about one billion…
Analysis of medium resolution spectra by automated methods - application to M55 and omega Centauri
P. G. Willemsen, M. Hilker, A. Kayser +1
We have employed feedforward neural networks trained on synthetic spectra in the range 3800 to 5600 AA with resolutions of 2-3 AA to determine metallicities from spectra of about 1…
Automated Determination of Stellar Parameters from Simulated Dispersed Images for DIVA
P. G. Willemsen, C. A. L. Bailer-Jones, T. A. Kaempf +1
We have assessed how well stellar parameters (T_eff, logg and [Fe/H]) can be retrieved from low-resolution dispersed images to be obtained by the DIVA satellite. Although DIVA is p…