Assigned ID: 369 ----- Attempting Submission 1 (Fri Mar 07 16:04:24 GMT 2008) ----- Hubble's Next Generation Spectral Library (NGSL) comprises intermediate-resolution (R~1000) STIS spectra of 378 stars having a wide range in metallicity and age. Unique features of the NGSL include its broad wavelength coverage (1,800-10,100 Å) and high-S/N, absolute spectrophotometry. When incorporated in modern stellar population synthesis codes, the NGSL should enable us to constrain simultaneously the star-formation history and metal-enrichment history of galaxies over a wide redshift interval (z= 0-2). In AR10659, we laid the foundation for tracing the spectral evolution of galaxies by putting the NGSL in order. We now propose to derive the atmospheric and fundamental parameters of the program stars, generate integrated spectra of stellar populations of different metallicities and initial mass functions, and derive spectral diagnostics of the age, metalllicity and E(B-V) of stellar populations.

UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 51000.00 false 0.0 0.0 false false false false false SUPPORTED