NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-21 T04:07:14 PDT
Help | Comment | NED Home

For refcode 2005A&A...443..781G:
Retrieve 112 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2005A&A...443..781G SALT: a spectral adaptive light curve template for type Ia supernovae J. Guy, P. Astier, S. Nobili, N. Regnault and R. Pain Received 8 March 2005 / Accepted 23 June 2005 We present a new method to parameterize type Ia Supernovae (SN Ia) multi-color light curves. The method was developed in order to analyze the large number of SN Ia multi-color light curves measured in current high-redshift projects. The technique is based on empirically modeling SN Ia luminosity variations as a function of phase, wavelength, a shape parameter, and a color parameter. The model is trained with a sample of well-measured nearby SN Ia and then tested with an independent set of supernovae by building an optimal luminosity distance estimator that combines the supernova rest-frame luminosity, shape parameter, and color reconstructed with the model. The distances we measure using B- and V-band data show a dispersion around the Hubble line comparable or lower than obtained with other methods. With this model, we are able to measure distances using U- and B-band data with a dispersion of 0.16 +/- 0.05 around the Hubble line. Key words: supernovae: general, cosmology: observations
Retrieve 112 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home