Finding Cool Subdwarfs Using a V − J Reduced Proper-motion Diagram: Stellar Parameters for 91 Candidates

We present the results of a search for cool subdwarfs for which our candidates were drawn from a V − J reduced proper-motion diagram constructed by Salim & Gould (2002). Kinematic (U, V, and W) and self-consistent stellar parameters (Teff , log g, [Fe/H], and ξt) are derived for 91 candidate subdwarfs based on high resolution spectra. The observed stars span 3900K < Teff < 6200K and −2.63 < [Fe/H] < 0.25 including only 3 giants (log g < 4.0). Of the sample, 77 stars have MgH lines present in their spectra. With more than 56% of our candidate subdwarfs having [Fe/H]≤ −1.5, we show that the V −J reduced proper-motion diagram readily identifies metal-poor stars. Subject headings: stars: abundances – stars: fundamental parameters – subdwarfs