NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-27 T05:20:13 PDT
Help | Comment | NED Home

For refcode 2007A&A...466...11G:
Retrieve 256 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2007A&A...466...11G SALT2: using distant supernovae to improve the use of type Ia supernovae as distance indicators Guy, J.; Astier, P.; Baumont, S.; Hardin, D.; Pain, R.; Regnault, N.; Basa, S.; Carlberg, R. G.; Conley, A.; Fabbro, S.; Fouchez, D.; Hook, I. M.; Howell, D. A.; Perrett, K.; Pritchet, C. J.; Rich, J.; Sullivan, M.; Antilogus, P.; Aubourg, E.; Bazin, G.; Bronder, J.; Filiol, M.; Palanque-Delabrouille, N.; Ripoche, P.; Ruhlmann-Kleider, V. Abstract. Aims. We present an empirical model of type Ia supernovae spectro-photometric evolution with time. Methods: The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by the SNLS collaboration. We derive the average spectral sequence of type Ia supernovae and their main variability components including a color variation law. The model allows us to measure distance moduli in the spectral range 2500-8000 A with calculable uncertainties, including those arising from variability of spectral features. Results: Thanks to the use of high-redshift SNe to model the rest-frame UV spectral energy distribution, we are able to derive improved distance estimates for SNe Ia in the redshift range 0.8<z<1.1. The model can also be used to improve spectroscopic identification algorithms, and derive photometric redshifts of distant type Ia supernovae. Key words: supernovae: general, cosmology: observations
Retrieve 256 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home