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First measurement of the magnetic field on FK Com and its relation to the contemporaneous starspot locations
H. Korhonen, S. Hubrig, S. V. Berdyugina +5
In this study we present simultaneous low-resolution longitudinal magnetic field measurements and high-resolution spectroscopic observations of the cool single giant FK Com. The va…
The chromospherically active binary star EI Eridani II. Long-term Doppler imaging
A. Washuettl, K. G. Strassmeier, M. Weber
Data from 11 years of continuous spectroscopic observations of the active RS CVn-type binary star EI Eridani - gained at NSO/McMath-Pierce, KPNO/Coude Feed and during the MUSICOS 9…
The chromospherically active binary star EI Eridani I. Absolute dimensions
A. Washuettl, K. G. Strassmeier, T. Granzer +2
We present a detailed determination of the astrophysical parameters of the chromospherically active binary star EI Eridani. Our new radial velocities allow to improve the set of or…
First time-series optical photometry from Antarctica
K. G. Strassmeier, R. Briguglio, T. Granzer +11
Beating the Earth's day-night cycle is mandatory for long and continuous time-series photometry and had been achieved with either large ground-based networks of observatories at di…
Grid Integration of Robotic Telescopes
F. Breitling, T. Granzer, H. Enke
Robotic telescopes and grid technology have made significant progress in recent years. Both innovations offer important advantages over conventional technologies, particularly in c…
Multi-Site observations of SU Aurigae
Y. C. Unruh, J. -F. Donati, J. M. Oliveira +20
We present results from the 1996 MUSICOS (MUlti-SIte COntinuous Spectroscopy) campaign on the T Tauri star SU Aurigae. We find a 2.7-d periodicity in the He I (587.6 nm) line and s…