The puzzling activity cycle of the planet host star iota Hor

The discovery of a coronal cycle in iota Hor represents the shortest observed todate, in good agreement with chromospheric observations. A longer term trendseems to modulate the 1.6 yr cycle only in the chromosphere. As Hor is the onlysingle star where this behavior have ever been observed, it is critical tocontinue with our monitoring. The legacy value of this campaign is guaranteed,as it provides valuable constraints for models of magnetic field generation inyoung Sunlike stars. The iota Hor cycle might be the paradigm of the firstactivity cycles in the life of a solarlike star; besides, a jovian planetorbits the star at 0.9 a.u. We intend to conclude our program extending thecoverage of the new cycle, to confirm (or reject) the coupling between both activity tracers. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]