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astro-ph2005
Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae
Kevin Krisciunas, Peter M. Garnavich, Peter Challis +29
We present broad-band light curves of nine supernovae ranging in redshift from 0.5 to 0.8. The supernovae were discovered as part of the ESSENCE project, and the light curves are a…
astro-ph2005
A Definitive Measurement of Time Dilation in the Spectral Evolution of the Moderate-Redshift Type Ia Supernova 1997ex
R. J. Foley, A. V. Filippenko, D. C. Leonard +3
We have obtained high-quality Keck optical spectra at three epochs of the Type Ia supernova 1997ex, whose redshift z is 0.361. The elapsed calendar time between the first two spect…