Assigned ID: 252 ----- Submission 1 (Fri Jan 21 17:33:52 GMT 2005) ----- Using 380 stellar spectra from Hubble's Next Generation Spectral Library (NGSL; PI=Michael Gregg; GO 9088, 9786) incorporated in our stellar population synthesis code (Bruzual & Charlot 2003), we propose to constrain simultaneously the star-formation history and mean age, stellar metallicity and mass of galaxies over a wide redshift interval (z= 0 -2). The main advantages of the NGSL are the high-quality spectrophotometry (S/N >50) and broad wavelength coverage (2000-10,000 Ang) of the STIS spectra. The NGSL enables mid-UV as well as optical spectral indices to be used, thereby increasing the redshift interval of their application. It also guarantees consistency in treating low- and high-redshift galaxies, since the same stars are used as spectral templates. To realize the full potential of the NGSL, however, will require significant custom data-processing, calibration, and evaluation of the STIS data.

GALAXIES 12 96400.00 $57.8K in year 1; $38.6K in year 2 false 0.0 false false false false false SUPPORTED