Telescopio Nazionale Galileo

SARG
Preliminary radial velocities

 

Preliminary results of radial velocity measurements on Tau Ceti spectra

 

Fig 11: Preliminary radial velocities for the standard star Tau Cet. 

Top Panel: radial velocities obtained exploiting 7 spectral orders of spectra made without the Iodine Cell. 

Bottom Panel: Radial velocities obtained exploiting 1 spectral order of spectra made with the Iodine Cell. Full reduction will make use of the whole spectral region including lines of the iodine cell (about 25 orders).