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====== SALT spectral time series ====== (or templates/surfaces) ===== Data ===== * {{::salt2_model_data-2-4.tar.gz}}, from Betoule et al. (2014), Joint SDSS/SNLS Lightcurve Analysis, extracted from {{::salt2-4_data.tgz|}} (md5:af829c7f177c6037adcbe0a89360464a) that can also be found [[http://supernovae.in2p3.fr/sdss_snls_jla/ReadMe.html|here]] with the data release. * {{:salt2_model_data-2-0.tar.gz}}, from Guy et al. (2010), SNLS 3 year cosmology analysis (SNLS3) (*) * {{::salt2_model_data-1-0.tar.gz}}, from Guy et al. (2007), first release of SALT2 (with salt2_spec_dispersion_scaling.dat fixed) * {{:salt_model_data-1-0.tar.gz}}, from Guy et al. (2005), SALT1 model data (*) Data set should be used with code version 2.2.0 or higher. The same applies to more recent versions. ===== Description ===== The archive file contains all the data that define the model. **SALT2** * ''salt2_template_0.dat'' Average spectral sequence * ''salt2_template_1.dat'' Spectral sequence of 1st variability component * ''salt2_color_correction.dat'' Model of color variation law * ''salt2_color_dispersion.dat'' Model of color errors (~ k-correction errors) * ''salt2_lc_relative_variance_0.dat'' Variance of average spectral sequence (error on mean), for lightcurves * ''salt2_lc_relative_variance_1.dat'' Variance of first component (error on mean), for lightcurves * ''salt2_lc_relative_covariance_01.dat'' Covariance of of components 0 and 1, for lightcurves * ''salt2_lc_dispersion_scaling.dat'' Error scaling to account for the residual dispersion, for lightcurves * ''salt2_spec_variance_0.dat'' Variance of average spectral sequence (error on mean), for spectra (only in Guy 2007 version) * ''salt2_spec_variance_1.dat'' Variance of first component (error on mean), for spectra (only in Guy 2007 version) * ''salt2_spec_covariance_01.dat'' Covariance of of components 0 and 1, for spectra (only in Guy 2007 version) **SALT1** * ''salt_template.dat'' Average spectral sequence (modified version of P. Nugent template) * ''corrections_stretch'' Polynomial corrections as a function of stretch, phase, wavelength * ''corrections_color'' Polynomial corrections as a function of color and wavelength