Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-06-24
Astron.Astrophys.443:781-791,2005
Astronomy and Astrophysics
Astrophysics
Accepted in A&A, June 23, 2005 (printer friendly replacement version, includes language corrections)
Scientific paper
10.1051/0004-6361:20053025
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 combining 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 around the Hubble line of 0.16 +- 0.05.
Astier Pierre
Guy Julien
Nobili Serena
Pain Raynald
Regnault Nicolas
No associations
LandOfFree
SALT: a Spectral Adaptive Light curve Template for Type Ia Supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with SALT: a Spectral Adaptive Light curve Template for Type Ia Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SALT: a Spectral Adaptive Light curve Template for Type Ia Supernovae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-581873