antoniseb
06-August-2004, 10:43 AM
Here is a paper that describes a method for determining the distance to type 1A supernovae that doesn't involve using the redshift, and can be used for finding the distances to dimmer more distant supernovae.
Redshift-Independent Distances to Type Ia Supernovae (http://www.arxiv.org/PS_cache/astro-ph/pdf/0408/0408097.pdf)
The method has been shown to work for the 60 Type 1A events that have been accurately measured. The technique uses a Bayesian Adapted Template Match on the light curve, that can be accurately applied with only a few data-points.
This technique will be useful in large deep surveys. It doesn't seem to have much use in getting more accurate distances for nearby events.
Redshift-Independent Distances to Type Ia Supernovae (http://www.arxiv.org/PS_cache/astro-ph/pdf/0408/0408097.pdf)
The method has been shown to work for the 60 Type 1A events that have been accurately measured. The technique uses a Bayesian Adapted Template Match on the light curve, that can be accurately applied with only a few data-points.
This technique will be useful in large deep surveys. It doesn't seem to have much use in getting more accurate distances for nearby events.