UC San Diego

The Chemical Composition and Age of the Metal-poor Halo Star BD +17°3248**Based on observations made at three facilities: (1) the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute (STScI), which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555; (2) the Keck I Telescope of the W. M. Keck Observatory, which is operated by the California Association for Research in Astronomy (CARA, Inc.) on behalf of the University of California and the California Institute of Technology; and (3) the H. J. Smith Telescope of McDonald Observatory, which is operated by the University of Texas at Austin.