Relative abundances of the five stable isotopes of titanium ( ^ { 46 } Ti to ^ { 50 } Ti ) are measured for 11 M dwarfs belonging to the thin disk ( four stars ) , thick disk ( three stars ) , the halo ( one star ) , and either the thick or the thin disk ( three stars ) .
Over the metallicity range of the sample ( -1 < [ Fe/H ] < 0 ) , the isotopic ratios are approximately constant to the solar system ratios .
There is no discernible difference between the isotopic ratios for thin and thick disk stars .
Isotopic ratios are in fair accord with recent calculations of Galactic chemical evolution despite the fact that such calculations underpredict [ Ti/Fe ] by about 0.4 dex at all metallicities .