2003/06/03 by David Yong, David L. Lambert, David L. Lambert · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Diagram #Gamma-ray bursts and supernovae #Hertzsprung–Russell diagram #Kinematics #Stars #Stellar atmosphere #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/376398
PASP (in press)
arxiv created 2003/06/03 · openalex publication_date 2003/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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. Kinematic ( U , V , and W ) and self‐consistent stellar parameters ( T eff , log g , [Fe/H], and ξ t ) are derived for 91 candidate subdwarfs based on high‐resolution spectra. The observed stars span 3900 K < T eff < 6200 K and −2.63 < [Fe/H] < 0.25 including only three 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.