Searching for multiple populations in Ruprecht 106

ABSTRACT More than a decade has passed since the definition of globular cluster (GC) changed, and now we know that they host multiple populations (MPs). But few GCs do not share behaviour Ruprecht 106 is one these clusters. We analysed 13 member red giant branch stars using spectra in wavelength range 6120–6405 Å obtained through GIRAFFE Spectrograph, mounted at UT2 telescope Paranal, as well whole C, V,R, I photometry Swope Las Campanas. Atmospheric parameters were determined from to determine Fe Na abundances. A photometric analysis searching for MPs was also carried out. Both analyses confirm indeed on simple stellar population, agreement with previous studies. Finally, dynamical study concerning its orbits out analyse possible extragalactic origin cluster. The orbital integration indicates this GC belongs inner halo, while an energy plane shows it cannot be accurately associated any known progenitor.