Astrometric and photometric characterization of $\hat{I}\cdot$ Tel B combining two decades of observations

P. H. Nogueira, C. Lazzoni, A. Zurlo +11

$\hat{I}\cdot$ Tel is an 18 Myr system with a 2.09 M${}_{\odot }$ A-type star and an M7-M8 brown dwarf companion, $\hat{I}\cdot$ Tel B, separated by 4.2'' (208 au). High-contrast imaging campaigns over 2…