Initial Hubble Diagram Results from the Nearby Supernova Factory
Abstract
The use of Type Ia supernovae as distance indicators led to the discovery of the accelerating expansion of the universe a decade ago. Now that large second generation surveys have significantly increased the size and quality of the high-redshift sample, the cosmological constraints are limited by the currently available sample of ~50 cosmologically useful nearby supernovae. The Nearby Supernova Factory addresses this problem by discovering nearby supernovae and observing their spectrophotometric time development. Our data sample includes over 2400 spectra from spectral timeseries of 185 supernovae. This talk presents results from a portion of this sample including a Hubble diagram (relative distance vs. redshift) and a description of some analyses using this rich dataset.
Keywords
Cite
@article{arxiv.0810.3499,
title = {Initial Hubble Diagram Results from the Nearby Supernova Factory},
author = {S. Bailey and G. Aldering and P. Antilogus and C. Aragon and C. Baltay and S. Bongard and C. Buton and M. Childress and Y. Copin and E. Gangler and S. Loken and P. Nugent and R. Pain and E. Pecontal and R. Pereira and S. Perlmutter and D. Rabinowitz and G. Rigaudier and P. Ripoche and K. Runge and R. Scalzo and G. Smadja and C. Tao and R. C. Thomas and C. Wu},
journal= {arXiv preprint arXiv:0810.3499},
year = {2008}
}
Comments
Short version of proceedings for ICHEP08, Philadelphia PA, July 2008; see v1 for full-length version