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P. Nugent, G. Aldering (LBNL), R. Amanullah (Stockholm), P. Antilogus (IPN Lyon), P. Astier (LPNHE), C. Balland (IAS Orsay), G. Blanc (LBNL), M.S. Burns (Colorado Col.), A. Conley, S. Deustua (LBNL), R. Ellis (Caltech), S. Fabbro (IPN Lyon), G. Folatelli (Stockholm), A. Fruchter (STScI), G. Garavini (Stockholm), R. Gibbons, G. Goldhaber (LBNL), A. Goobar (Stockholm), D.E. Groom (LBNL), D. Hardin (LPNHE), I.M. Hook (Oxford), D.A. Howell (LBNL), M. Irwin (IoA Cambridge), D. Kasen, A. Kim (LBNL), R.A. Knop (Vanderbilt), J.-M. Levy (LPNHE), C. Lidman (ESO), R. McMahon (IoA Cambridge), M. Mouchet (DAEC Meudon), S. Nobili (Stockholm), R. Pain (LPNHE), N. Panagia (STScI), E. Pécontal (CRA Lyon), C.R. Pennypacker, S. Perlmutter, R. Quimby (LBNL), J. Raux (LPNHE), N. Regnault (LBNL), P. Ruiz-Lapuente (Barcelona), B. Schaefer (Texas), K. Schahmaneche (LPNHE), A.L. Spadafora (LBNL), N. Walton (ING LaPalma), L. Wang, W.M. Wood-Vasey (LBNL), Supernova Cosmology Project Collaboration
We present several quality spectra of high-redshift Type Ia Supernovae (SNe~Ia) observed over the past 7 years by the Supernova Cosmology Project. These spectra are first and foremost used to classify the supernova type since non-Ia contamination can contribute a significant systematic error in the measurement of the cosmological parameters. A secondary effort is under way to use SNe~Ia spectra at both high and low redshift as an independent tool to measure the intrinsic brightness of a supernova and to quantify/constrain possible evolutionary effects.
PEN acknowledges ongoing support from the DOE and NASA.
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