On the basis of our new simultaneous photom-etry and spectroscopy (885 uvby differential measurements in 11 nights and 154 spectrograms of the FeIIλ4508 region in 5 nights), we can detect 12 probable periodicities in the variability pattern of this star, determining the frequencies of 7 without any ambiguity. Through a direct fit of pul-sational models to our data, we estimate the inclination o...

We present Far Ultraviolet Spectroscopic Explorer observations of the magnetic cataclysmic variable V405 Aurigae. Together with four other DQ Her type binaries, V405 Aur forms a small subclass of intermediate polars which are likely to evolve into low magnetic field strength polars, similar to AM Her. Our coadded FUSE spectrum exhibits broad O VI and C III emission-lines as well as a narrow O V...

Medium-resolution spectroscopic observations with full phase coverage of the eclipsing polar HU Aqr are presented. Na i absorption and Ca ii emission lines are used to trace the secondary star. While the Na i lines seem to have contributions from both hemispheres of the donor star, the Ca ii lines were found to originate from the irradiated part of its surface alone. An irradiation model was ap...

High-resolution longslit Hα spectra of the shell of the old nova DQ Her have been obtained with the William Herschel Telescope using the ISIS spectrograph. An equatorial expansion velocity of 370 ± 14 km s is derived from the spectra which, in conjunction with a narrowband Hα image of the remnant, allows a distance estimate of 525±28pc. An equatorial ring which exhibits enhanced [Nii] emission ...

Different methods exist to treat distal radius fractures. A prospective randomized study was conducted to establish whether palmar plate fixation with locking screws gave better results than percutaneous K-wire fixation in patients over 50 years of age. Only fractures with dorsal displacement after a simple fall were included in the study. Twenty wrists were treated with K-wires and 20 with a p...

On the basis of our new simultaneous photometry and spectroscopy (885 uvby differential measurements in 11 nights and 154 spectrograms of the FeIIλ4508 region in 5 nights), we can detect 12 probable periodicities in the variability pattern of this star, determining the frequencies of 7 without any ambiguity. Through a direct fit of pulsational models to our data, we estimate the inclination of ...

The purpose of this study was to determine whether osteoporosis influenced the clinical results of distal radius fractures in women above the age of 40 years. Forty patients underwent bone mineral densitometry of the distal forearm, hip and lumbar spine. Radiographs of both wrists were taken at the time of fracture healing and the difference in ulnar variance, palmar tilt and radial inclination...

Searching for extrasolar planets by direct detection is extremely challenging for current instrumentation. Indirect methods, that measure the effect of a planet on its host star, are much more promising and have indeed led to the discovery of nearly all extrasolar systems known today. While the most successful method thus far is the radial velocity technique, new interferometric instruments lik...

The purpose of our study was to investigate which radiological parameter had the maximal detrimental effect on functional outcome following malunion of distal radius fractures. Sixty-four women over 40 years of age who had sustained low-energy wrist fractures were included in the study. The mean age of the patients was 64 years. We compared the ulnar variance, radial inclination and palmar tilt...

Precise brightness measurements of HD 46375 have been acquired with an automatic telescope to search for transits of its short-period, sub-Saturn extrasolar planet. Transits of the companion do not occur, indicating that the inclination of the orbit i is less than 83 degrees and sini is less than 0.992. This upper limit on sini still preserves the possibility that the mass of the planet is less...