ksi Tau Campaign
The stellar system ksi Tauri is formed by 4 stars bound together. Two reveal a period of 7.15 days, a third orbit these with a period of 145 days, and a fourth shows a period of no less than 51 years.
Since 2011 the star has been followed by Ondrejov and IGeoE observatories, as well as interferometrically.
The observations of Lisbon:
and the spectrogram for the 7.15d period and half 145d periof:
The work was presented at the XI HAC .
Related papers: