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The GALEX View of Supernova Hosts
James D. Neill, Mark Sullivan, Mark Seibert
We exploit the accumulating, high-quality, multi-wavelength imaging data of nearby supernova (SN) hosts to explore the relationship between SN production and host galaxy evolution.…
Type Ia Supernovae Rates and Galaxy Clustering from the CFHT Supernova Legacy Survey
M. L. Graham, C. J. Pritchet, M. Sullivan +25
The Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS) has created a large homogeneous database of intermediate redshift (0.2 < z < 1.0) type Ia supernovae (SNe Ia). The…
SNLS Spectroscopy: Testing for Evolution in Type Ia Supernovae
T. J. Bronder, I. M. Hook, P. Astier +19
Aims: We present a quantitative study of a new data set of high redshift Type Ia supernovae spectra, observed at the Gemini telescopes during the first 34 months of the Supernova L…
The Peculiar Velocities of Local Type Ia Supernovae and their Impact on Cosmology
James D. Neill, Michael J. Hudson, Alex Conley
We quantify the effect of supernova Type Ia peculiar velocities on the derivation of cosmological parameters. The published distant and local Ia SNe used for the Supernova Legacy S…
The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
D. Andrew Howell, Mark Sullivan, Peter E. Nugent +14
The acceleration of the expansion of the universe, and the need for Dark Energy, were inferred from the observations of Type Ia supernovae (SNe Ia). There is consensus that SNe Ia…
The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey
A. Conley, D. A. Howell, A. Howes +24
We compare the rise times of nearby and distant Type Ia supernovae (SNe Ia) as a test for evolution using 73 high-redshift spectroscopically-confirmed SNe Ia from the first two yea…