The variability of a newly discovered gamma Doradus star, HD 108100
Breger, M Handler, G Garrido, R Audard, N Beichbuchner, F Zima, Wolfgang Paparo, M Jiang, SY Liu, ZL Zhou, AY Pikall, H Stankov, A Guzik, JA Sperl, M Krzesinski, J Ogloza, W Pajdosz, G Zola, S Serkowitsch, E Reegen, P Rumpf, T Schmalwieser, A
Astronomy and astrophysics vol:324 issue:2 pages:566-572
A coordinated photometric campaign at five observatories to monitor the suspected brightness variations of the early-l; star HD 108100 was undertaken by the DSN (Delta Scuti Network) and WET (Whole Earth Telescope). 288 hours of high-quality observations during a 58 day time span led to the discovery of two frequencies of 1.32 and 1.40 c/d with V amplitudes of 0.010 and 0.007 mag. The detection of both frequencies is statistically significant with amplitude signal/noise ratios of 18 and 12. The light variations are accompanied by v - y color variations of 0.005 and 0.003 mag, respectively.